Gus spent $20.00 at the grocery store.  He bought 2 bag of chips for $2.00 each, a bucket of fried chicken for $8.00 and a bottle of soda for $1.00.  How much did the apple pie cost?
He bought 2 bags of chips at $2.00 each so they cost 2*2 = $
<gadget id="calculator">2*2</gadget>
<output>4</output>
4.00.
He spent $4.00 on chips, $8.00 on fried chicken and $1.00 on soda so he spent 4+8+1 = $
<gadget id="calculator">4+8+1</gadget>
<output>13</output>
13.00.
He spent $20.00 and all of the groceries, except for the pie cost $13.00 so that means the apple pie cost 20-13 = $
<gadget id="calculator">20-13</gadget>
<output>7</output>
7.00.

<result>7</result>