A dictionary is 15 yuan, Xiaohong brought 200 yuan, bought 9 copies, how much money is left?
一本词典15元，小红带了200元，买了9本，还剩多少元？
<gadget id="calculator">15 * 9</gadget>
<output>135</output>

<gadget id="calculator">200 - 135</gadget>
<output>65</output>

<result>65</result>