Mark has 3 tanks for pregnant fish.  Each tank has 4 pregnant fish and each fish gives birth to 20 young.  How many young fish does he have at the end?
He has 4*3=
<gadget id="calculator">4*3</gadget>
<output>12</output>
12 pregnant fish.
They give birth to 12*20=
<gadget id="calculator">12*20</gadget>
<output>240</output>
240 fish.

<result>240</result>