Teacher Li bought 23 "Mathematical Stories", paid 100 yuan, and got back 8 yuan. How much is each "Mathematical Story"?
李老师买了23本《数学故事》，付了100元，找回8元，每本《数学故事》多少元？
<gadget id="calculator">100 - 8</gadget>
<output>92</output>

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

<result>4</result>