## Step 1: Define the variables and their attributes
We have the following variables: ['eggs', 'sashimi', 'chicken drumsticks', 'strips of bacon', 'chicken breasts']. Each variable has attributes related to cost and calcium content.

## Step 2: Formulate the objective function
The objective function to maximize is: $8.49 \times eggs + 3.55 \times sashimi + 1.54 \times chicken\ drumsticks + 9.73 \times strips\ of\ bacon + 2.84 \times chicken\ breasts$.

## 3: Define the constraints
1. $eggs \geq 0$, $sashimi \geq 0$, $chicken\ drumsticks \geq 0$, $strips\ of\ bacon \geq 0$, $chicken\ breasts \geq 0$.
2. $5 \times eggs + 16 \times sashimi + 2 \times chicken\ drumsticks + 6 \times strips\ of\ bacon + 20 \times chicken\ breasts \leq 553$.
3. $sashimi + strips\ of\ bacon + chicken\ breasts \geq 71$.
4. $6 \times strips\ of\ bacon + 8 \times chicken\ breasts \geq 25$.
5. $17 \times chicken\ drumsticks + 6 \times strips\ of\ bacon \geq 17$.
6. $4 \times eggs - 7 \times chicken\ drumsticks + 8 \times strips\ of\ bacon \geq 0$.
7. $6 \times strips\ of\ bacon + 20 \times chicken\ breasts \leq 311$.
8. $5 \times eggs + 16 \times sashimi + 6 \times strips\ of\ bacon \leq 393$.
9. $5 \times eggs + 16 \times sashimi + 20 \times chicken\ breasts \leq 208$.
10. $16 \times sashimi + 2 \times chicken\ drumsticks + 20 \times chicken\ breasts \leq 550$.
11. $16 \times sashimi + 2 \times chicken\ drumsticks + 6 \times strips\ of\ bacon \leq 301$.
12. $5 \times eggs + 16 \times sashimi + 2 \times chicken\ drumsticks + 6 \times strips\ of\ bacon + 20 \times chicken\ breasts \leq 301$.
13. $1 \times eggs + 17 \times chicken\ drumsticks \leq 95$.
14. $1 \times eggs + 8 \times chicken\ breasts \leq 186$.
15. $1 \times sashimi + 8 \times chicken\ breasts \leq 81$.
16. $1 \times sashimi + 17 \times chicken\ drumsticks \leq 199$.
17. $1 \times eggs + 1 \times sashimi \leq 214$.
18. $6 \times strips\ of\ bacon + 8 \times chicken\ breasts \leq 200$.
19. $1 \times sashimi + 6 \times strips\ of\ bacon \leq 73$.
20. $1 \times eggs + 1 \times sashimi + 8 \times chicken\ breasts \leq 129$.
21. $1 \times eggs + 6 \times strips\ of\ bacon + 8 \times chicken\ breasts \leq 217$.
22. $1 \times sashimi + 6 \times strips\ of\ bacon + 8 \times chicken\ breasts \leq 68$.
23. $1 \times eggs + 1 \times sashimi + 17 \times chicken\ drumsticks \leq 243$.
24. $1 \times eggs + 1 \times sashimi + 17 \times chicken\ drumsticks + 6 \times strips\ of\ bacon + 8 \times chicken\ breasts \leq 243$.

## 4: Implement the problem in Gurobi
```python
import gurobi

# Create a new model
m = gurobi.Model()

# Define the variables
eggs = m.addVar(lb=0, name="eggs")
sashimi = m.addVar(lb=0, name="sashimi")
chicken_drumsticks = m.addVar(lb=0, name="chicken_drumsticks")
strips_of_bacon = m.addVar(lb=0, name="strips_of_bacon")
chicken_breasts = m.addVar(lb=0, name="chicken_breasts")

# Objective function
m.setObjective(8.49 * eggs + 3.55 * sashimi + 1.54 * chicken_drumsticks + 9.73 * strips_of_bacon + 2.84 * chicken_breasts, gurobi.GRB.MAXIMIZE)

# Constraints
m.addConstr(5 * eggs + 16 * sashimi + 2 * chicken_drumsticks + 6 * strips_of_bacon + 20 * chicken_breasts <= 553)
m.addConstr(sashimi + strips_of_bacon + chicken_breasts >= 71)
m.addConstr(6 * strips_of_bacon + 8 * chicken_breasts >= 25)
m.addConstr(17 * chicken_drumsticks + 6 * strips_of_bacon >= 17)
m.addConstr(4 * eggs - 7 * chicken_drumsticks + 8 * strips_of_bacon >= 0)
m.addConstr(6 * strips_of_bacon + 20 * chicken_breasts <= 311)
m.addConstr(5 * eggs + 16 * sashimi + 6 * strips_of_bacon <= 393)
m.addConstr(5 * eggs + 16 * sashimi + 20 * chicken_breasts <= 208)
m.addConstr(16 * sashimi + 2 * chicken_drumsticks + 20 * chicken_breasts <= 550)
m.addConstr(16 * sashimi + 2 * chicken_drumsticks + 6 * strips_of_bacon <= 301)
m.addConstr(5 * eggs + 16 * sashimi + 2 * chicken_drumsticks + 6 * strips_of_bacon + 20 * chicken_breasts <= 301)
m.addConstr(eggs + 17 * chicken_drumsticks <= 95)
m.addConstr(eggs + 8 * chicken_breasts <= 186)
m.addConstr(sashimi + 8 * chicken_breasts <= 81)
m.addConstr(sashimi + 17 * chicken_drumsticks <= 199)
m.addConstr(eggs + sashimi <= 214)
m.addConstr(6 * strips_of_bacon + 8 * chicken_breasts <= 200)
m.addConstr(sashimi + 6 * strips_of_bacon <= 73)
m.addConstr(eggs + sashimi + 8 * chicken_breasts <= 129)
m.addConstr(eggs + 6 * strips_of_bacon + 8 * chicken_breasts <= 217)
m.addConstr(sashimi + 6 * strips_of_bacon + 8 * chicken_breasts <= 68)
m.addConstr(eggs + sashimi + 17 * chicken_drumsticks <= 243)
m.addConstr(eggs + sashimi + 17 * chicken_drumsticks + 6 * strips_of_bacon + 8 * chicken_breasts <= 243)

# Solve the model
m.optimize()

# Print the solution
if m.status == gurobi.GRB.OPTIMAL:
    print("Objective: ", m.objVal)
    print("Eggs: ", eggs.varValue)
    print("Sashimi: ", sashimi.varValue)
    print("Chicken Drumsticks: ", chicken_drumsticks.varValue)
    print("Strips of Bacon: ", strips_of_bacon.varValue)
    print("Chicken Breasts: ", chicken_breasts.varValue)
else:
    print("The model is infeasible")
```