1+(1/2)+((1/3)+(2/3))+((1/4)+(2/4)+(3/4))+…+((1/50) +(2/50)+(3/50)+...+(48/50)+(49/50)).
1+(1/2)+((1/3)+(2/3))+((1/4)+(2/4)+(3/4))+…+((1/50)+(2/50)+(3/50)+…+(48/50)+(49/50))．
<gadget id="calculator">1 + 49</gadget>
<output>50</output>

<gadget id="calculator">49 / 2</gadget>
<output>49/2 = around 24.5</output>

<gadget id="calculator">50 * (49/2)</gadget>
<output>1_225</output>

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

<gadget id="calculator">1 + (1_225/2)</gadget>
<output>1_227/2 = around 613.5</output>

<result>1_227/2 = around 613.5</result>