Chapter 2: Arithmetic

Basic Arithmetic Operations

Python supports the same five arithmetic operations—addition, subtraction, multiplication, division, and exponentiation—but it uses different symbols for multiplication, division, and exponentiation. Python also adheres to the basic rules of mathematics.
To perform multiplication, you must use '*'. Unlike in traditional mathematics where you might write xy or x × y, in Python, you need to write x*y.

z = x * y

For division, you must use '/', never ÷ or a fraction bar.

z = x / y

Powers

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When it comes to writing an exponent you don't use ^ instead you use ** like this y**x not y^x.

z= y**x

Another example could be b² = b × b would normal be written as b² but instead itw wrote as :

b ** 2 = b * b

Floor Division and Remainder

if you divide two numbers using / you'll get a float (2.5). For example:

7/4

This will give you 1.75 with .75 as the fractional part. While if you use floor division.

7//4

This turns to be 1 because everything after the "." drops off.
Now if you use % what do you think will happen?

This is the remainder of whatever is left after you divide 7 by 4.

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