((2/343)+(4/343)+(6/343)+…+(98/343))-((3/686)+(5/686)+(7/686)+…+( 99/686))
((2/343)+(4/343)+(6/343)+…+(98/343))-((3/686)+(5/686)+(7/686)+…+(99/686))
<gadget id="calculator">1 + 97</gadget>
<output>98</output>

<gadget id="calculator">98 * 49</gadget>
<output>4_802</output>

<gadget id="calculator">686 * 2</gadget>
<output>1_372</output>

<gadget id="calculator">4_802 / 1_372</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>