Get rid of Python2 numeric relics

[eumiro]

Migration from Python2 to Python3 changes some numeric behavior. In Python3:

• round(), math.ceil() and math.floor() return int instead of float
• true division int / int returns float and therefore it is not necessary to convert one of the parts to float or to multiply the expression by 1.0

The code has been simplified. No functionality has been changed.

[boring-cyborg]

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[uranusjr]

I wonder why the outer floor existed in the first place. That wouldn’t do anything on Python 2 either…

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.