A steel pipe is (1/2) meter long, if (2/5) is cut off, there is still ((())/(())), if (2/5) meter is cut off, how many meters are left.
一根钢管长(1/2)米，截去(2/5)，还剩下((())/(()))，若截去(2/5)米，还剩下多少米．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>