After subtracting (1/3) from 18, add (1/3) to it, what is the result?
18减去它的(1/3)后，再增加它的(1/3)，结果是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">18 * (2/3) * (4/3)</gadget>
<output>16</output>

<result>16</result>