A rope is (5/2) m long, cut off (1/2) for the first time, cut off the remaining (1/3) for the second time, and cut off the remaining (1/4) for the third time ． How long is this rope?
一根绳子长(5/2)m，第一次剪去它的(1/2)，第二次剪去余下的(1/3)，第三次剪去又余下的(1/4)．这根绳子还长多少米？
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

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

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

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(5/2) * (1/2) * (2/3) * (3/4)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>