A bundle of iron wire factory is 200m, 30% of the total length is used for the first time, and 42.5% of the total length is used for the second time, how many meters are left?
一捆铁丝厂200m，第一次用去全长的30%，第二次用去全长的42.5%，还剩多少米？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">42.5 / 100</gadget>
<output>0.425</output>

<gadget id="calculator">1 - (3/10) - 0.425</gadget>
<output>0.275</output>

<gadget id="calculator">200 * 0.275</gadget>
<output>55</output>

<result>55</result>