Chuck breeds dogs.  He has 3 pregnant dogs.  They each give birth to 4 puppies.  Each puppy needs 2 shots and each shot costs $5.  How much did the shots cost?
He has 3*4=
<gadget id="calculator">3*4</gadget>
<output>12</output>
12 puppies.
So they need 12*2=
<gadget id="calculator">12*2</gadget>
<output>24</output>
24 shots.
That means the vaccines cost 24*5=$
<gadget id="calculator">24*5</gadget>
<output>120</output>
120.

<result>120</result>