There is a 1 meter long rope, the first cut (1/10) meter, the second cut (3/10) meter, how many meters left?
有1米长的绳子，第一次剪了(1/10)米，第二次剪(3/10)米，还剩多少米？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (1/10) - (3/10)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>