When reading a book, you read 84 pages on the first day, and the ratio of the number of pages you read on the second day to the number of pages you read on the first day is 5:7. From which page should you start reading on the third day?
看一本书，第一天看了84页，第二天看的页数与第一天看的页数的比是5：7，第三天应从那一页开始看？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">84 * (5/7)</gadget>
<output>60</output>

<gadget id="calculator">84 + 60 + 1</gadget>
<output>145</output>

<result>145</result>