Mr. Wang bought 60 copies of the same storybook, paid 250 yuan, and got back 28 yuan. How much is each book?
王老师买60本一样的故事书，付出250元，找回28元，每本图书多少钱？
<gadget id="calculator">250 - 28</gadget>
<output>222</output>

<gadget id="calculator">222 / 60</gadget>
<output>37/10 = around 3.7</output>

<result>37/10 = around 3.7</result>