Jame's buys 100 head of cattle for $40,000.  It cost 20% more than that to feed them.  They each weigh 1000 pounds and sell for $2 per pound.  How much profit did he make?
It cost .2*40000=$<T>multiply(0.2, 40000)=8000.0 more to feed than buy them
So the total cost to feed them was 40000+8000=$<T>add(40000, 8000)=48000
So in total it cost 48000+40000=$<T>add(48000, 40000)=88000
Each cow sells for 2*1000=$<T>multiply(2, 1000)=2000
So he sells them for 2000*100=$<T>multiply(2000, 100)=200000
So he makes a profit of 200,000-88,000=$<T>subtract(200000, 88000)=112000
