(1/99)+(2/99)+(3/99)+(4/99)+...+(98/99).
(1/99)+(2/99)+(3/99)+(4/99)+…+(98/99)．
<gadget id="calculator">1 + 98</gadget>
<output>99</output>

<gadget id="calculator">98 / 2</gadget>
<output>49</output>

<gadget id="calculator">99 * 49</gadget>
<output>4_851</output>

<gadget id="calculator">4_851 / 99</gadget>
<output>49</output>

<result>49</result>