let's add $a and $b. They are: 5 and 1
5 + 1 = 6
we can increment $b by 1 using ++. It will become: 2
Now we can multiply $a and $b. It is: 10
We can divide 10 by $a and get: 2
We can decrease $a by 1 using --: 4
We can subtract $b from $a and get: 2
+ is used to add two numbers, - is used to subtract two numbers. ++ is used to increment, -- is used to decrement. * is used to multiply, / is used to divide. % is used as the remainder or modulus of a number. ** is used to exponent a number.
