Xiao Ming reads a story book. On the first day, he reads 24 pages, accounting for 1/5 of the whole book. On the second day, he reads 37.5% of the whole book. How many pages are left?
小明读一本故事书，第一天读了24页，占全书的(1/5)，第二天读了全书的37.5%，还剩多少页没有读？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">37.5 / 100</gadget>
<output>0.375</output>

<gadget id="calculator">120 * 0.375</gadget>
<output>45</output>

<gadget id="calculator">120 - 24 - 45</gadget>
<output>51</output>

<result>51</result>