(No need for math, just describe it in terms of basic physics concepts.)

In your response, include details about several qualitative aspects of the journey:
- Describe the change in the frequency of light as it reaches the black hole.
- Describe the relationship between the speed of light and the gravitational field, and explain the behavior of the light as it moves toward the black hole.

In addition to your response, calculate the speed of light in meters per second, taking into account the proportionality constant between the speed of light and the gravitational field (gravitational constant).

You will use Python and assume you have access to any common Python libraries. Limit yourself to using the Decimal library for all numerical computations. Start by importing Decimal with the statement `from decimal import Decimal`.

Specify your Python code blocks as tagged code, with tags like "[...explanation...](...code...)", and separate the codes with line breaks. For example:

    [The color of the balloon shape](color = 'red')

    [The size of the balloon shape](size = 20)

    [Combine color and size](balloon = shape(color, size))

Multiple Python code blocks may be tagged with the same tag.