Subtract one-half of it from 2005, then subtract the remaining third, then subtract the second remaining quarter, then subtract the third remaining fifth... and so on By analogy, subtract the remaining 1/2005 until the end, how much is left in the end?
从2005里减去它的二分之一，再减去余下的三分之一，再减去第二次余下的四分之一，再减去第三次余下的五分之一…依此类推，一直到最后减去余下的2005分之一，最后还剩多少？
<gadget id="calculator">1 / 2_005</gadget>
<output>1/2_005 = around 0.000499</output>

<gadget id="calculator">2_005 * (1/2_005)</gadget>
<output>1</output>

<result>1</result>