Try to find the result of 1*2+2*3+3*4+4*5+5*6+...+99*100.
试求1*2+2*3+3*4+4*5+5*6+…+99*100的结果．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">99 + 1</gadget>
<output>100</output>

<gadget id="calculator">99 + 2</gadget>
<output>101</output>

<gadget id="calculator">(1/3) * 99 * 100 * 101</gadget>
<output>333_300</output>

<result>333_300</result>