Calculation: (1+(1/(1*3)))*(1+(1/(2*4)))*(1+(1/(3*5)))*…*(1+( 1/(2007*2009))).
计算：(1+(1/(1*3)))*(1+(1/(2*4)))*(1+(1/(3*5)))*…*(1+(1/(2007*2009)))．
<gadget id="calculator">2 * 2_008</gadget>
<output>4_016</output>

<gadget id="calculator">4_016 / 2_009</gadget>
<output>4_016/2_009 = around 1.999004</output>

<result>4_016/2_009 = around 1.999004</result>