In the formula 1+(1/2)+(1/4)+(1/6)+(1/8)=□*(1/2)*(1/4)*(1/6)*(1 /8), what is the number that should be filled in "□".
在算式1+(1/2)+(1/4)+(1/6)+(1/8)=□*(1/2)*(1/4)*(1/6)*(1/8)中，"□"中应该填入的数是多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/2) + (1/4) + (1/6) + (1/8)</gadget>
<output>49/24 = around 2.041667</output>

<gadget id="calculator">(1/2) * (1/4) * (1/6) * (1/8)</gadget>
<output>1/384 = around 0.002604</output>

<gadget id="calculator">(49/24) / (1/384)</gadget>
<output>784</output>

<result>784</result>