Ding Ding spent 15 days reading a 180-page book, 3 days earlier than planned. How many pages do you plan to read each day?
小丁丁用了15天看了一本180页的书，比计划提前了3天看完．计划每天看多少页？
<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<gadget id="calculator">180 / 18</gadget>
<output>10</output>

<result>10</result>