The ratio of A and B is 6:5, A's number is 24, what is B's number?
甲、乙两数的比是6：5，甲数是24，乙数是多少．
<gadget id="calculator">24 * 5</gadget>
<output>120</output>

<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<result>20</result>