A wire is 2.5 meters long, (1/5) is used for the first time, and (3/5) is used for the second time, how many meters are left?
一根电线长2.5米，第一次用去(1/5)，第二次用去(3/5)米，还剩几米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2.5 * (1/5)</gadget>
<output>0.5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">0.5 + (3/5)</gadget>
<output>1.1</output>

<gadget id="calculator">2.5 - 1.1</gadget>
<output>1.4</output>

<result>1.4</result>