A wire is (8/5) meters long after being connected to (2/5) meters, how many meters is this wire originally?
一根电线接上(2/5)米后长(8/5)米，这根电线原来长多少米？
<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(8/5) - (2/5)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>