A book has 1,440 pages. I read it for 5 days in the first week, with an average of 120 pages per day. The rest are going to read 70 pages per day. How many more days do I need to read?
一本书有1440页，第一周看了5天，平均每天看120页，剩下的准备每天看70页，还要看几天？
<gadget id="calculator">5 * 120</gadget>
<output>600</output>

<gadget id="calculator">1_440 - 600</gadget>
<output>840</output>

<gadget id="calculator">840 / 70</gadget>
<output>12</output>

<result>12</result>