Calculation: (1-(3/(2*4)))*(1-(3/(3*5)))…(1-(3/(2005*2007)))=how much.
计算：(1-(3/(2*4)))*(1-(3/(3*5)))…(1-(3/(2005*2007)))=多少．
<gadget id="calculator">4 * 2_007</gadget>
<output>8_028</output>

<gadget id="calculator">2_008 / 8_028</gadget>
<output>502/2_007 = around 0.250125</output>

<result>502/2_007 = around 0.250125</result>