At the height of cranberry season, there are 60000 cranberries in a bog. 40% are harvested by humans and another 20000 are eaten by elk. How many cranberries are left?
First find the total number of cranberries harvested by humans: 60000 cranberries * 40% = 
<gadget id="calculator">60000*40*.01</gadget>
<output>24_000</output>
24000.
Then subtract the number of cranberries taken by the humans and elk to find the number remaining: 60000 cranberries - 24000 cranberries - 20000 cranberries = 
<gadget id="calculator">60000-24000-20000</gadget>
<output>16_000</output>
16000 cranberries.

<result>16_000</result>