A rope, (1/3) meter is used for the first time, (2/5) meter is used for the second time, and (5/6) meter is left. How many meters is this rope originally?
一条绳子，第一次用去(1/3)米，第二次用去(2/5)米，还剩下(5/6)米．这条绳子原来是多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/3) + (2/5) + (5/6)</gadget>
<output>47/30 = around 1.566667</output>

<result>47/30 = around 1.566667</result>