Calculation: (((2**2+4**2+…+100**2)-(1**2+3**2+…+99**2))/(1+2+…+ 10+9+...+1))=how many.
计算：(((2**2+4**2+…+100**2)-(1**2+3**2+…+99**2))/(1+2+…+10+9+…+1))=多少．
<gadget id="calculator">3 + 199</gadget>
<output>202</output>

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

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

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

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