Naughty reading a 108-page story book, I read 25% of the whole book on the first day, and the rest (2/3) on the second day, how many pages are left?
淘气看一本108页的故事书，第一天看了全书的25%，第二天看了余下的(2/3)，还剩下多少页没有看？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/4) * (2/3)</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">108 * (1/4)</gadget>
<output>27</output>

<result>27</result>