It is known that number A is (2/3) of number B, and number B is the number of A.
已知甲数是乙数的(2/3)，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>