Janet gets a job as a waitress.  She makes $10 an hour from wages and another $15 an hour from tips.  She wants to save up 20% of the cost of a $10000 car for a downpayment.  If she works 40 hours a week how many weeks will she need to work to save the down payment?
She makes 10+15=$
<gadget id="calculator">10+15</gadget>
<output>25</output>
25 an hour from working.
That means each week she makes 25*40=$
<gadget id="calculator">25*40</gadget>
<output>1_000</output>
1000.
She wants to make 10000*.2=$
<gadget id="calculator">10000*.2</gadget>
<output>2_000</output>
2000.
So she needs to work 2000/1000=
<gadget id="calculator">2000/1000</gadget>
<output>2</output>
2 weeks.

<result>2</result>