There were 140 kids in the junior prom. Of those, a fourth of them were dancers. Of the dancers, 25 danced the slow dance. How many of the dancer students did not slow dance?
140/4 = 
<gadget id="calculator">140/4</gadget>
<output>35</output>
35 of the students were dancers.
35-25 = 
<gadget id="calculator">35-25</gadget>
<output>10</output>
10 of the dancer students did not slow dance.

<result>10</result>