A book has 150 pages in total. Xiao Ming has read (1/6) of it. How many pages are left?
一本书共150页，小明已看完它的(1/6)，还剩多少页没有看？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">150 * (5/6)</gadget>
<output>125</output>

<result>125</result>