Calculation: 100*99-99*98+98*97-97*96+96*95-95*94+...+4*3-3*2+2*1.
计算：100*99-99*98+98*97-97*96+96*95-95*94+…+4*3-3*2+2*1．
<gadget id="calculator">198 + 6</gadget>
<output>204</output>

<gadget id="calculator">33 / 2</gadget>
<output>33/2 = around 16.5</output>

<gadget id="calculator">204 * (33/2) * 2</gadget>
<output>6_732</output>

<gadget id="calculator">6_732 - 2_550</gadget>
<output>4_182</output>

<result>4_182</result>