Calculation: (1/(1*3))+(1/(3*5))+(1/(5*7))+…+(1/(1993*1995))+(1/(1995* 1997)).
计算：(1/(1*3))+(1/(3*5))+(1/(5*7))+…+(1/(1993*1995))+(1/(1995*1997))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 1</gadget>
<output>1</output>

<gadget id="calculator">1 / 1_997</gadget>
<output>1/1_997 = around 0.000501</output>

<gadget id="calculator">1 - (1/1_997)</gadget>
<output>1_996/1_997 = around 0.999499</output>

<gadget id="calculator">(1/2) * (1_996/1_997)</gadget>
<output>998/1_997 = around 0.49975</output>

<result>998/1_997 = around 0.49975</result>