A story book with 136 pages. After Xiaohui read it for 7 days, there are still 80 pages left. How many pages does he read on average every day?
一本故事书136页．小辉看了7天后，还剩下80页，他平均每天看多少页？
<gadget id="calculator">136 - 80</gadget>
<output>56</output>

<gadget id="calculator">56 / 7</gadget>
<output>8</output>

<result>8</result>