The ratio of number A to number B is (1/3), then what is the ratio of number B to number A?
甲数与乙数的比值是(1/3)，那么乙数与甲数的比值是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<result>3</result>