addition here: (adds two variables using addition)
1 + 2 = 3
subtraction here: (subtracts two variables using subtraction)
5 - 4 = 1
multiplication here: (multiplies two variables using multiplication)
5 * 4 = 20
division here: (divides two variables using division)
100 / 10 = 10
increment here: (adds a 1 to a variable using increments)
++6 = 7