A classmate reads a storybook, 25 pages a day for the first 4 days, 40 pages a day thereafter, and just finished reading it in another 6 days. How many pages does this student read a day on average?
一个同学读一本故事书，前4天每天读25页，以后每天读40页，又读了6天正好读完，这个同学平均每天读多少页？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">40 * 6</gadget>
<output>240</output>

<gadget id="calculator">100 + 240</gadget>
<output>340</output>

<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">340 / 10</gadget>
<output>34</output>

<result>34</result>