The difference between the two numbers of A and B is 12, and the ratio of the two numbers of A and B is 5:3, so what is the sum of the two numbers of A and B?
甲乙两数的差是12，甲乙两数的比是5：3，那么甲乙两数的和是多少．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">6 * 8</gadget>
<output>48</output>

<result>48</result>