(1/2)+((1/4)+(3/4))+((1/6)+(3/6)+(5/6))+…+((1/98)+( 3/98)+...+(97/98))=how much.
(1/2)+((1/4)+(3/4))+((1/6)+(3/6)+(5/6))+…+((1/98)+(3/98)+…+(97/98))=多少．
<gadget id="calculator">1 + 49</gadget>
<output>50</output>

<gadget id="calculator">50 * 49</gadget>
<output>2_450</output>

<gadget id="calculator">2_450 / 2</gadget>
<output>1_225</output>

<gadget id="calculator">1_225 / 2</gadget>
<output>1_225/2 = around 612.5</output>

<result>1_225/2 = around 612.5</result>