A piece of iron wire, after cutting 2.5 meters, what remains is 1.5 meters less than three times the cut? How long is this wire?
一根铁丝，剪去2.5米后，剩下的比剪去的3倍少1.5米？这根铁丝长多少米？
<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>

<gadget id="calculator">7.5 - 1.5</gadget>
<output>6</output>

<gadget id="calculator">6 + 2.5</gadget>
<output>8.5</output>

<result>8.5</result>