You are purchasing 30 widget(s) at a cost of $119.95 each. With tax, the total comes to $3,778.43.

Addition: 20 + 6 = 26

Subtraction: 20 - 6 = 14

Multiplication: 20 * 6 = 120

Division: 20 / 6 = 3.3333333333333

Modulus (remainder): 20 % 6 = 2