How much money did you make if you sold 220 chocolate cookies at $1 per cookie and 70 vanilla cookies at $2 per cookie?
You sold 220 chocolate cookies at $1 per cookie earning 220 x 1 = $<T>multiply(220, 1)=220
You sold 70 vanilla cookies at $2 per cookie earning 70 x 2 =$<T>multiply(70, 2)=140
In total you earned 220 + 140 = $<T>add(220, 140)=360
