Calculation: ((19/97)+(1919/9797))/(19191919/97979797).
计算：((19/97)+(1919/9797))/(19191919/97979797)．
<gadget id="calculator">19 / 97</gadget>
<output>19/97 = around 0.195876</output>

<gadget id="calculator">1_919 / 9_797</gadget>
<output>19/97 = around 0.195876</output>

<gadget id="calculator">(19/97) + (19/97)</gadget>
<output>38/97 = around 0.391753</output>

<gadget id="calculator">19_191_919 / 97_979_797</gadget>
<output>19/97 = around 0.195876</output>

<gadget id="calculator">(38/97) / (19/97)</gadget>
<output>2</output>

<result>2</result>