A piece of iron wire is 28.82 meters long, cut off the 8.9-meter-long section, how much more meters will be left than the cut off.
一根铁丝长28.82米，剪掉长8.9米的一段，剩下的比剪掉的多多少米．
<gadget id="calculator">28.82 - 8.9 - 8.9</gadget>
<output>11.02</output>

<result>11.02</result>