Zhang Hua reads an extra-curricular book. He has already read 120 pages, which is 1/4 more than the number of pages he has not read. How many pages are left?
张华同学看一本课外书，已经看了120页，比未看的页数多(1/4)，未看的还有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">120 / (5/4)</gadget>
<output>96</output>

<result>96</result>