A wire is used up (3/5) meters, and the used part is shorter than the rest (4/5) meters. How many meters was the wire originally?
一根电线用去(3/5)米，用去的比剩下的短(4/5)米，这根电线原来长多少米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(3/5) + (4/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(3/5) + (7/5)</gadget>
<output>2</output>

<result>2</result>