Known (2/(2*4))=(1/2)-(1/4), (2/(4*6))=(1/4)-(1/6), find (1/ The sum of (2*4))+(1/(4*6))+...(1/(48*50)).
已知(2/(2*4))=(1/2)-(1/4)，(2/(4*6))=(1/4)-(1/6)，求(1/(2*4))+(1/(4*6))+…(1/(48*50))的和．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 50</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">(1/2) - (1/50)</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">(12/25) / 2</gadget>
<output>6/25 = around 0.24</output>

<result>6/25 = around 0.24</result>