Xiaoqiang has been reading a storybook for 5 days, 32 pages a day. I read exactly half of the pages of this book. The rest read 40 pages a day. How many days will it take Xiaoqiang to finish reading this storybook?
小强看一本故事书，已经看了5天，每天看32页．正好看了这本书页数的一半．剩下的每天看40页．小强看完这本故事书一共要用多少天？
<gadget id="calculator">32 * 5</gadget>
<output>160</output>

<gadget id="calculator">160 / 40</gadget>
<output>4</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<result>9</result>