Chapter 6 - Sphere is not as smooth as in example

Found the issue
I was limiting some calculations to be able to pass some tests.
For example, I expect to get 0.7 as an answer, but I get 0.69999999. So I was formating it to get exact numbers, which lead to some limitations. Like for example, colors instead of having range 0-255 with step 1, would have a range the same range, but with step 25