((1/9)+(1/27))/4+(23/27).
((1/9)+(1/27))/4+(23/27)．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / 27</gadget>
<output>1/27 = around 0.037037</output>

<gadget id="calculator">(1/9) + (1/27)</gadget>
<output>4/27 = around 0.148148</output>

<gadget id="calculator">(4/27) / 4</gadget>
<output>1/27 = around 0.037037</output>

<gadget id="calculator">23 / 27</gadget>
<output>23/27 = around 0.851852</output>

<gadget id="calculator">(1/27) + (23/27)</gadget>
<output>8/9 = around 0.888889</output>

<result>8/9 = around 0.888889</result>