A story book has 72 pages. Xiaohong reads it for 2 days, and there are 8 pages left. How many pages does Xiaohong read?
一本故事书有72页，小红看了2天，还剩下8页，小红看了多少页．
<gadget id="calculator">72 - 8</gadget>
<output>64</output>

<result>64</result>