The ratio of the number of pages of the first and second volumes of a book is 5:3. The first volume is 60 pages longer than the second volume, how many pages are there in the second volume?
一本书上、下册页数的比是5：3．上册比下册多60页，下册有多少页？
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/3) - 1</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 / (2/3)</gadget>
<output>90</output>

<result>90</result>