After cutting 42% of a wire, the remaining length is 1.6 meters. What is the total length of the wire?
一根电线剪掉42%以后，余下的剪掉的长1.6米，这根电线全长多少米．
<gadget id="calculator">42 / 100</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">1 - (21/50) - (21/50)</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">1.6 / (4/25)</gadget>
<output>10</output>

<result>10</result>