(2/3) of number A is equal to (4/5) of number B. It is known that number A is 36. What is the number of B?
甲数的(2/3)与乙数的(4/5)相等，已知甲数是36，求乙数是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(2/3) / (4/5)</gadget>
<output>5/6 = around 0.833333</output>

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

<result>30</result>