wire first uses up (2/3) meters, then uses up (3/4) meters, leaving (1/12) meters. How long is this wire originally?
一根电线先用去(2/3)米，又用去(3/4)米，还剩(1/12)米．这根电线原长多少米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(2/3) + (3/4) + (1/12)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>