Question:
Notice that  \[31\cdot37=1147.\]Find some integer $n$ with $0\leq n<2293$ such that  \[31n\equiv 3\pmod{2293}.\]

Answer:
Doubling the given equation tells us  \[31\cdot74=2294.\]Specifically  \[31\cdot74\equiv1\pmod{2293}\]and 74 is the multiplicative inverse of 31 modulo 2293.

If we triple the congruence we just found we get  \[31\cdot222\equiv3\pmod{2293}.\]Therefore $n=\boxed{222}$.