Mr. Liu spent 56.8 yuan to buy books, and then bought 2 kilograms of apples, 1 kilogram of apples was 5 yuan, and he brought 100 yuan, how much money is left?
刘老师买书用去56.8元，再买2千克苹果，1千克苹果5元，他带了100元，还剩下多少元？
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">56.8 + 10</gadget>
<output>66.8</output>

<gadget id="calculator">100 - 66.8</gadget>
<output>33.2</output>

<result>33.2</result>