The sum of the two numbers of A and B is 60, the ratio of the two numbers of A and B is 2:3, what is the number of B?
甲乙两数的和是60，甲乙两数的比是2：3，乙数是多少．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>