Kim spends $25,000 to open a store.  She makes $4000 a month in revenue and her expenses are $1500 a month.  How long would it take to pay back the cost to open the store?
Her profit is 4000-1500=$
<gadget id="calculator">4000-1500</gadget>
<output>2_500</output>
2500.
So it takes 25000/2500=
<gadget id="calculator">25000/2500</gadget>
<output>10</output>
10 months to make back the money.

<result>10</result>