Calculation: ((1*2*3+2*4*6+3*6*9+…+100*200*300)/(2*3*4+4*6*8+6*9*12+ ...+200*300*400))=how much.
计算：((1*2*3+2*4*6+3*6*9+…+100*200*300)/(2*3*4+4*6*8+6*9*12+…+200*300*400))=多少．
<gadget id="calculator">1 * 2 * 3</gadget>
<output>6</output>

<gadget id="calculator">2 * 3 * 4</gadget>
<output>24</output>

<gadget id="calculator">6 / 24</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>