There is a rope 1 meter long, first cut off (1/5), the second time cut off the rest (1/6), and the third time cut off the rest (1/7) ,..., keep cutting, and cut off the rest (1/10) for the last time. So, how many centimeters are left on this rope?
有一根绳子长1米，第一次剪去它的(1/5)，第二次剪去它剩下的(1/6)，第三次又剪去它剩下的(1/7)，…，一直剪下去，最后一次剪去剩下的(1/10)．那么，这根绳子还剩下多少厘米．
<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 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 * (4/5) * (5/6) * (6/7) * (7/8) * (8/9) * (9/10)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>