1+2+3+…+100+…+3+2+1=how much
1+2+3+…+100+…+3+2+1=多少
<gadget id="calculator">100 + 1</gadget>
<output>101</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">101 * 50</gadget>
<output>5_050</output>

<gadget id="calculator">99 + 1</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">5_050 + 4_950</gadget>
<output>10_000</output>

<result>10_000</result>