After a telephone line is used up (5/8), there are 6 meters left. How many meters is this telephone line originally?
一根电话线用去(5/8)后，还剩6米．这根电话线原来长多少米．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">6 / (3/8)</gadget>
<output>16</output>

<result>16</result>