Python example of the correct way to divide decimals

Find a formula

The code is as follows:

A=1
b=2
C=3

Print c* (A/b)

The running result is always 0, and after repeated checks are taken apart, it is found that in Python, integers can only be derived from integers.
That is, the result of a except B is always 0, as long as a or b is changed to a floating point number.

The code is as follows:

A=1
b=2
C=3

Print c* (a/float (b))
Print c* (float (a)/b)

In order to accurately calculate the correct result of a except B, of course, if a is larger than B, and does not need the fractional digits, it can be used without float.
Such as:

The code is as follows:

A=1
b=2
C=3

Print C/A # 3
Print C/b # 1
Print c/float (b) # 1.5

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