A steel pipe, cut off 25% for the first time, cut off (1/3) for the second time, cut off 4 meters more than the first time, how many meters is this steel pipe long?
一根钢管，第一次截去25%，第二次截去(1/3)，第二次比第一次多截去4米，这根钢管长多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) - (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">4 / (1/12)</gadget>
<output>48</output>

<result>48</result>