Tom opens an amusement park.  It cost $100,000 to open initially.  It also cost 1% of that to run per day.  He sells 150  tickets a day for $10 each.  How long will it take to make back his money?
It cost 100,000*.01=$
<gadget id="calculator">100000*.01</gadget>
<output>1_000</output>
1,000 a day to keep the place open.
He makes 150*10=$
<gadget id="calculator">150*10</gadget>
<output>1_500</output>
1500 a day from the park.
So he makes a profit of 1500-1000=$
<gadget id="calculator">1500-1000</gadget>
<output>500</output>
500 a day.
So it takes 100000/500=
<gadget id="calculator">100000/500</gadget>
<output>200</output>
200 days to make back his money.

<result>200</result>