((1*2*4+2*4*8+...+100*200*400)/(1*3*9+2*6*18+...+100*300*900))=how much.
((1*2*4+2*4*8+…+100*200*400)/(1*3*9+2*6*18+…+100*300*900))=多少．
<gadget id="calculator">1 * 2 * 4</gadget>
<output>8</output>

<gadget id="calculator">1 * 3 * 9</gadget>
<output>27</output>

<gadget id="calculator">8 / 27</gadget>
<output>8/27 = around 0.296296</output>

<result>8/27 = around 0.296296</result>