The teacher bought 4 schoolbags, paid 100 yuan to the salesperson's aunt, and got 4 yuan back. How much is each schoolbag?
老师买了4个书包，付给售货员阿姨100元钱，找回4元，每个书包多少钱？
<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<result>24</result>