A book has 785 pages in total. Teacher Wang read 48 pages on the first day, 85 pages on the second day, and 52 pages on the third day. How many pages are left?
一本书共有785页，王老师第一天看了48页，第二天看了85页，第三天看了52页，还剩多少页没有看？
<gadget id="calculator">785 - 48 - 85 - 52</gadget>
<output>600</output>

<result>600</result>