John orders food for a massive restaurant.  He orders 1000 pounds of beef for $8 per pound.  He also orders twice that much chicken at $3 per pound.  How much did everything cost?
The beef cost $8 * 1000 = $<T>multiply(8, 1000)=8000
He buys 1000 * 2 = <T>multiply(1000, 2)=2000 pounds of chicken
So the chicken cost 2000 * $3 = $<T>multiply(2000, 3)=6000
So the total cost is $8000 + $6000 = $<T>add(8000, 6000)=14000
