Calculation: 1*(2*3)/(3*4)*(4*5)/(5*6)*…*(2008*2009)/(2009*2010)=how much.
计算：1*(2*3)/(3*4)*(4*5)/(5*6)*…*(2008*2009)/(2009*2010)=多少．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">2 / 2_010</gadget>
<output>1/1_005 = around 0.000995</output>

<result>1/1_005 = around 0.000995</result>