what kind of book should I read to think of good solution by myself?

"1770277824944 should equal 0"
Expected and actual values are reversed.

This kata has performance requirements but the input range is not mentioned.

Tests are broken:

Traceback (most recent call last):
  File "/workspace/default/tests.py", line 34, in <module>
    random_tests()
TypeError: 'NoneType' object is not callable

Please fix your description markup and formatting. This is unreadable.
Maybe get help on Discord for some Math MarkDown too.

Welp, this shouldn't pass.