((1/2)+(4/9))*18=
((1/2)+(4/9))*18=
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(1/2) + (4/9)</gadget>
<output>17/18 = around 0.944444</output>

<gadget id="calculator">(17/18) * 18</gadget>
<output>17</output>

<result>17</result>