Assignment Statement
Assignment statements define variables by evaluating the expression on the right side and assigning the value to whatever is on the left side.
zebra = 23 - 14
zebra # 9
When run, the interpreter first evaluates the expression
Using variables in an expression without using an assignment statement will not change the value of the variable.
zebra * 3 # 27
zebra # 9
zebra = zebra + 2
zebra # 11