Two wires, the first one is (3/4) meters long, the first one is (2/5) the second one, how many meters are the total length of the two wires?
两根电线，第一根长(3/4)米，第一根是第二根的(2/5)，两根电线一共长多少米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) / (2/5)</gadget>
<output>15/8 = around 1.875</output>

<gadget id="calculator">(15/8) + (3/4)</gadget>
<output>21/8 = around 2.625</output>

<result>21/8 = around 2.625</result>