Xiaogang reads a 365-page storybook, and reads an average of 22 pages a day. After 15 days of reading, how many pages are left unread?
小刚看一本365页的故事书，平均每天看22页，看了15天后，还剩多少页没有看？
<gadget id="calculator">22 * 15</gadget>
<output>330</output>

<gadget id="calculator">365 - 330</gadget>
<output>35</output>

<result>35</result>