25% of an iron wire is 36 meters, what is the 40% of this iron wire?
一根铁丝的25%是36米，这根铁丝的40%是多少．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">36 / (1/4)</gadget>
<output>144</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">144 * (2/5)</gadget>
<output>288/5 = around 57.6</output>

<result>288/5 = around 57.6</result>