Jane is dividing up minnows to be carnival prizes. She bought 600 minnows, and each prize is a bowl with 3 minnows. If 800 people are going to play the game and 15% win a prize, how many minnows will be left over?
First find the number of people that win a prize: 800 people * 15% = 
<gadget id="calculator">800*15*.01</gadget>
<output>120</output>
120 people.
Then multiply that number by the number of minnows each person wins: 120 people * 3 minnows/person = 
<gadget id="calculator">120*3</gadget>
<output>360</output>
360 minnows.
Then subtract that number of minnows won from the starting number to find the number that are left: 600 minnows - 360 minnows = 
<gadget id="calculator">600-360</gadget>
<output>240</output>
240 minnows.

<result>240</result>