<gadget id="calculator">58 - 19</gadget>
<output>39</output>

<result>39</result>
Iesha has 58 books. 19 are about school and the rest are about sports. How many books about sports does Iesha have?
Iesha has 58 books. 19 are about school and the rest are about sports. How many books about sports does Iesha have?