The younger brother reads a storybook, and he has already read 36 pages, 27 pages more than he has not read, and the number of pages he has read is several times the number of pages he has not read.
弟弟看一本故事书，已经看了36页，比没看的多27页，看的页数是没看的几倍．
<gadget id="calculator">36 - 27</gadget>
<output>9</output>

<gadget id="calculator">36 / 9</gadget>
<output>4</output>

<result>4</result>