A book has 324 pages. Wang Qiang read (1/3) of the whole book in the first week, so how many pages are left?
一本书有324页，王强第一个星期看了全书的(1/3)，那么还剩下多少页没有看？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">324 * (2/3)</gadget>
<output>216</output>

<result>216</result>