Calculation: 1/50+2/50+...+98/50+99/50=how much.
计算：1/50+2/50+…+98/50+99/50=多少．
<gadget id="calculator">1 + 99</gadget>
<output>100</output>

<gadget id="calculator">99 / 2</gadget>
<output>99/2 = around 49.5</output>

<gadget id="calculator">100 * (99/2)</gadget>
<output>4_950</output>

<gadget id="calculator">4_950 / 50</gadget>
<output>99</output>

<result>99</result>