Teacher Li brought 1200 yuan to go shopping, 20% of which was spent on buying clothes, and 25% was spent on buying DVDs. How much money does the teacher have left?
李老师带了1200元钱区购物，买衣服用去了20%，买DVD用去了25%．老师身上还剩下多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/5) - (1/4)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1_200 * (11/20)</gadget>
<output>660</output>

<result>660</result>