Archie reads a story book, if he reads 25 pages on the first day, and then reads 5 more pages every day than the previous day, then there are 47 pages left on the last day; if he reads 40 pages on the first day, then Read 5 more pages every day than the previous day, so on the last day, there are 37 pages left. Question: What is the minimum number of pages in this storybook?
阿奇读一本故事书，如果他第一天读25页，以后每天都比前一天多读5页，那么到最后一天时，还剩下47页；如果他第一天读40页，以后每天都比前一天多读5页，那么到最后一天时，还剩下37页．请问：这本故事书最少共有多少页？
<gadget id="calculator">47 - 37</gadget>
<output>10</output>

<gadget id="calculator">25 + 30 + 35 + 10</gadget>
<output>100</output>

<gadget id="calculator">40 + 100</gadget>
<output>140</output>

<gadget id="calculator">100 - 40</gadget>
<output>60</output>

<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<gadget id="calculator">13 / 2</gadget>
<output>13/2 = around 6.5</output>

<gadget id="calculator">140 * (13/2)</gadget>
<output>910</output>

<gadget id="calculator">910 + 37</gadget>
<output>947</output>

<result>947</result>