Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?
The candy bars cost 4*2= $
<gadget id="calculator">4*2</gadget>
<output>8</output>
8.
Todd has 20-8= $
<gadget id="calculator">20-8</gadget>
<output>12</output>
12 left.

<result>12</result>