Xiaoling reads a story book, and she reads 18 pages a day on average. She has read it for 15 days. What page should she start reading on the 16th day?
小玲看一本故事书，平均每天看18页，已经看了15天，她第十六天该从第几页看起？
<gadget id="calculator">15 * 18</gadget>
<output>270</output>

<gadget id="calculator">270 + 1</gadget>
<output>271</output>

<result>271</result>