(2+(2/9))*18．
(2+(2/9))*18．
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">2 + (2/9)</gadget>
<output>20/9 = around 2.222222</output>

<gadget id="calculator">(20/9) * 18</gadget>
<output>40</output>

<result>40</result>