There is a three-digit number, the product of the digits of each digit is 8. What is the sum of the largest and smallest of these three-digit numbers?
有一种三位数，每个数的各位上的数的积都是8．这种三位数中最大的数与最小的数的和是多少．
<gadget id="calculator">811 + 118</gadget>
<output>929</output>

<result>929</result>