Wang Min read a 120-page historical story book, and the number of pages he read in two days was 45% of the whole book. He read the whole book (1/4) on the first day, so how many pages did he read on the second day?
王敏看一本120页的历史故事书，两天看的页数是全书的45%，第一天看了全书的(1/4)，那么第二天看了多少页？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

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

<gadget id="calculator">(9/20) - (1/4)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">120 * (1/5)</gadget>
<output>24</output>

<result>24</result>