Mom brought 100 yuan, bought 4 schoolbags, and found 8 yuan, how much is a schoolbag?
妈妈带了100元钱，买了4个书包，找8回元，买一个书包多少元？
<gadget id="calculator">100 - 8</gadget>
<output>92</output>

<gadget id="calculator">92 / 4</gadget>
<output>23</output>

<result>23</result>