(7/18)/(1/2)+(2/3)*(1/9).
(7/18)/(1/2)+(2/3)*(1/9)．
<gadget id="calculator">7 / 18</gadget>
<output>7/18 = around 0.388889</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(7/18) / (1/2)</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(2/3) * (1/9)</gadget>
<output>2/27 = around 0.074074</output>

<gadget id="calculator">(7/9) + (2/27)</gadget>
<output>23/27 = around 0.851852</output>

<result>23/27 = around 0.851852</result>