(1/3) of the number a is b, and (1/3) of b is c. Given that a is 18, what is c?
数a的(1/3)是b，b的(1/3)是c，已知a是18，则c是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 * (1/3) * (1/3)</gadget>
<output>2</output>

<result>2</result>