Xiaoqiao borrowed a 219-page book from the school library and decided to read it in a week. A total of 145 pages were read in the first 5 days. The rest has to be read on weekends. How many pages does she have to read on average every day?
小巧向学校图书馆借了一本219页的书，决定一个星期看完．前5天共看了145页．剩下的要再双休日看完，她必须平均每天看几页？
<gadget id="calculator">219 - 145</gadget>
<output>74</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">74 / 2</gadget>
<output>37</output>

<result>37</result>