In the formula: 1+(1/2)+(1/4)+(1/8)+(1/16)=△*(1/2)*(1/4)*(1/8)*( 1/16), what number should be filled in "△".
在算式：1+(1/2)+(1/4)+(1/8)+(1/16)=△*(1/2)*(1/4)*(1/8)*(1/16)中，"△"内应填入的数是多少．
<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 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">1 + (1/2) + (1/4) + (1/8) + (1/16)</gadget>
<output>31/16 = around 1.9375</output>

<gadget id="calculator">(1/2) * (1/4) * (1/8) * (1/16)</gadget>
<output>1/1_024 = around 0.000977</output>

<gadget id="calculator">(31/16) / (1/1_024)</gadget>
<output>1_984</output>

<result>1_984</result>