While on vacation, Haley took 50 pictures at the zoo and 8 at the museum. If she later deleted 38 of the pictures, how many pictures from her vacation did she still have?
<gadget id="calculator">50 + 8</gadget>
<output>58</output>

<gadget id="calculator">58 - 38</gadget>
<output>20</output>

<result>20</result>