Rachel earned $200 babysitting. She spent 1/4 of the money on lunch. She spent 1/2 of the money on a DVD. How much did Rachel have left?
Rachel spent 1/4*200 = $
<gadget id="calculator">200*1/4</gadget>
<output>50</output>
50 on lunch.
Rachel spent 1/2*200 = $
<gadget id="calculator">200*1/2</gadget>
<output>100</output>
100 on a DVD.
Rachel has 200-50-100 = $
<gadget id="calculator">200-50-100</gadget>
<output>50</output>
50 left.

<result>50</result>