piece of iron wire, cut off (1/5) for the first time, cut off the rest (1/4) for the second time, cut off the remaining (1/3) for the third time, and cut off the remaining (1/3) for the fourth time Go to the remaining (1/2) in the third time, and only 10cm is left in the end. How long is this iron wire in centimeters?
一根铁丝，第一次剪去(1/5)，第二次剪去剩下的(1/4)，第三次剪去第二次剩下的(1/3)，第四次剪去第三次剩下的(1/2)，最后只剩下10cm，这根铁丝长多少厘米．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * (1/4)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5) - (1/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(3/5) * (1/3)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5) - (1/5) - (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/5) * (1/2)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5) - (1/5) - (1/5) - (1/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">10 / (1/5)</gadget>
<output>50</output>

<result>50</result>