A book has 60 pages, and Xiaofang has read 45 pages, how much do the remaining pages account for in the total number of pages?
一本书有60页，小芳看了45页，剩下的页数占总页数的多少．
<gadget id="calculator">60 - 45</gadget>
<output>15</output>

<gadget id="calculator">15 / 60</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>