Calculation: (1+3+5+7+...+199+201)-(2+4+6+8+...+198+200).
计算：(1+3+5+7+…+199+201)-(2+4+6+8+…+198+200)．
<gadget id="calculator">1 + 201</gadget>
<output>202</output>

<gadget id="calculator">101 / 2</gadget>
<output>101/2 = around 50.5</output>

<gadget id="calculator">202 * (101/2)</gadget>
<output>10_201</output>

<gadget id="calculator">2 + 200</gadget>
<output>202</output>

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

<gadget id="calculator">202 * 50</gadget>
<output>10_100</output>

<gadget id="calculator">10_201 - 10_100</gadget>
<output>101</output>

<result>101</result>