Calculate (((2**2+4**2+6**2+…+100**2)-(1**2+3**2+5**2+…+99**2) )/(1+2+3+...+10+9+...+2+1))=how much.
计算(((2**2+4**2+6**2+…+100**2)-(1**2+3**2+5**2+…+99**2))/(1+2+3+…+10+9+…+2+1))=多少．
<gadget id="calculator">100 ** 2</gadget>
<output>10_000</output>

<gadget id="calculator">99 ** 2</gadget>
<output>9_801</output>

<gadget id="calculator">10_000 - 9_801</gadget>
<output>199</output>

<gadget id="calculator">3 + 199</gadget>
<output>202</output>

<gadget id="calculator">199 - 3</gadget>
<output>196</output>

<gadget id="calculator">196 / 4</gadget>
<output>49</output>

<gadget id="calculator">49 + 1</gadget>
<output>50</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">202 * 25</gadget>
<output>5_050</output>

<gadget id="calculator">1 + 9</gadget>
<output>10</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">10 * (9/2) * 2</gadget>
<output>90</output>

<gadget id="calculator">90 + 10</gadget>
<output>100</output>

<gadget id="calculator">5_050 / 100</gadget>
<output>101/2 = around 50.5</output>

<result>101/2 = around 50.5</result>