The number of A is 30, which is (5/6) of the number B. What is the number of B?
甲数是30，是乙数的(5/6)，乙数是多少？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">30 / (5/6)</gadget>
<output>36</output>

<result>36</result>