Little Ding Ding has a storybook. He reads 10 pages a day for 5 days, and there are 38 pages left. How many pages are there in this storybook?
小丁丁有一本故事书，每天看10页，看了5天，还剩38页没有看完，这本故事书有多少页？
<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<gadget id="calculator">50 + 38</gadget>
<output>88</output>

<result>88</result>