If a classroom has 3 times as many girls as they do boys, and 1/10 as many nongendered children as they do boys, and the classroom has 30 boys.  How many total children does it have?
The classroom has 3 * 30 boys = 
<gadget id="calculator">3*30</gadget>
<output>90</output>
90 girls.
The classroom has 1/10 nongendered children so 10/100 * 30 boys = 
<gadget id="calculator">10/100*30</gadget>
<output>3</output>
3 nongendered children.
In total the classroom has 90 + 30 + 3 = 
<gadget id="calculator">90+30+3</gadget>
<output>123</output>
123 students.

<result>123</result>