A piece of iron wire, cut off 6 meters, and the rest is 1 meter shorter than 60% of the total length, how many meters are left?
一根铁丝，剪去6米，剩下的比全长的60%短1米，还剩下多少米．
<gadget id="calculator">12.5 - 6</gadget>
<output>6.5</output>

<result>6.5</result>