A 150-meter-long road has been built (2/3), how many meters are left to be repaired?
修一条长150米的公路，已经修好了(2/3)，还剩下多少米没有修？
<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">150 * (2/3)</gadget>
<output>100</output>

<result>100</result>