Xiaohong reads a novel. She reads (1/2) of the whole book on the first day, and reads the remaining (1/2) less than 6 pages on the second day. At this time, there are still 24 pages left. How many pages.
小红读一本小说，第一天读了全书的(1/2)，第二天读了余下的(1/2)少6页，这时还剩下24页没读，这本书共有多少页．
<gadget id="calculator">24 - 6</gadget>
<output>18</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/2) - (1/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">18 / (1/4)</gadget>
<output>72</output>

<result>72</result>