The story book has 815 pages. I read 152 pages in the first week and 300 pages in the second week. How many pages were read in two weeks? What is the column
故事书有815页，第一个星期看了152页，第二个星期看了300页，两星期共看多少页？列式为多少
<gadget id="calculator">152 + 300</gadget>
<output>452</output>

<result>452</result>