A section of steel pipe is cut off (2/3), which is exactly 4 meters. How many meters is this section of steel pipe originally?
一段钢管截去(2/3)，刚好是4米，这段钢管原有多少米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / (2/3)</gadget>
<output>6</output>

<result>6</result>