Edward made 37 dollars mowing lawns over the summer. If he spent 21 dollars buying new mower blades, how many 2 dollar games could he buy with the money he had left?
<gadget id="calculator">37 - 21</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<result>8</result>