Wang Hua read a 240-page book. He read the whole book (1/6) on the first day and 25% of the whole book on the second day. How many pages are left?
王华看一本240页的书，第一天看了全书的(1/6)，第二天看了全书的25%，还剩多少页没有看？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">240 * (1/6)</gadget>
<output>40</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">240 * (1/4)</gadget>
<output>60</output>

<gadget id="calculator">240 - 40 - 60</gadget>
<output>140</output>

<result>140</result>