There are 14 girls, 11 boys, and their parents at a park. If they split into 3 equally sized playgroups, each group contains 25 people. How many parents were at the park?
There are 3 groups * 25 people/group = 
<gadget id="calculator">3*25</gadget>
<output>75</output>
75 people in total.
There are 14 girls + 11 boys = 
<gadget id="calculator">14+11</gadget>
<output>25</output>
25 children in total.
There are 75 people - 25 children = 
<gadget id="calculator">75-25</gadget>
<output>50</output>
50 parents.

<result>50</result>