The number A is (2/3) of the number B, then the number B is the number A.
甲数是乙数的(2/3)，那么乙数是甲数的多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / (2/3)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>