Xiaohong reads a story book. She reads 60 pages on the first day and 42 pages on the second day. At this time, the ratio of the number of pages she has read to the number of pages she has not read is 2:3. How many pages are there in this book?
小红看一本故事书，第一天看了60页，第二天看了42页，这时看的与未看的页数之比是2：3，这本书共多少页？
<gadget id="calculator">60 + 42</gadget>
<output>102</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">102 / (2/5)</gadget>
<output>255</output>

<result>255</result>