Xiaoqiang read a 150-page book in 6 days. According to this calculation, how many days will it take to finish a 200-page book?
小强6天看了150页书，照这样计算，看完一本200页的书，需要多少天？
<gadget id="calculator">150 / 6</gadget>
<output>25</output>

<gadget id="calculator">200 / 25</gadget>
<output>8</output>

<result>8</result>