A steel pipe is 6 meters long, how many meters are left after (1/3) is used up?
一根钢管长6米，用去(1/3)后，还剩下多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * (1/3)</gadget>
<output>2</output>

<gadget id="calculator">6 - 2</gadget>
<output>4</output>

<result>4</result>