docs(python): Explain how Polars floor division differs from Python #16054
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Adds an example explaining how Polars does floating-point division, then does the flooring operation. Fixes #14614.
@orlp is this explanation good?
The goal is to explain why Polars' division operation of 6.0 / 0.1 does not also, like Python, give 59.999___ (and then floor it to 59.0) considering that 0.1 is represented in the computer as slightly greater than 0.1.