A story book has 136 pages, Xiaohong read it for 4 days, and there are 16 pages left. How many pages does Xiaohong read on average every day?
一本故事书有136页，小红看了4天，还剩16页．小红平均每天看多少页？
<gadget id="calculator">136 - 16</gadget>
<output>120</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<result>30</result>