A book has 120 pages, and the ratio of the number of read pages to the number of unread pages is 3:2. How many pages are left in this book?
一本书有120页，已看页数和未看页数的比是3：2，这本书还有多少页未看？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

<gadget id="calculator">120 * (2/5)</gadget>
<output>48</output>

<result>48</result>