The number A is 104, and the number B is 3 times the number A. What is the sum of the numbers A and B?
甲数是104，乙数是甲数的3倍，甲、乙两数的和是多少．
<gadget id="calculator">104 * 3</gadget>
<output>312</output>

<gadget id="calculator">312 + 104</gadget>
<output>416</output>

<result>416</result>