If the calculation result of 347*81+21*925+472*19 is equal to A, then what is the sum of the digits of A?
如果347*81+21*925+472*19的计算结果等于A，那么，A的各位数字之和等于多少
<gadget id="calculator">5 + 6 + 5</gadget>
<output>16</output>

<result>16</result>