Arrange 1, 2, 3, 4, 5, 6, 7, 8, 9 in a row in any order, and each adjacent 3 numbers can form 7 three-digit numbers according to their order in the arrangement. For each permutation of these 9 numbers, the corresponding sum of 7 three-digit numbers can be obtained. What is the smallest sum of the obtained three-digit numbers?
将1，2，3，4，5，6，7，8，9按任意次序排成一排，其中每相邻的3个数字按其在排列中的顺序可组成7个三位数，对这9个数的每一种排列，都可以求出相应的7个三位数之和，则所得的三位数之和中，最小的是多少？
<gadget id="calculator">761 + 612 + 123 + 234 + 345 + 458 + 589</gadget>
<output>3_122</output>

<result>3_122</result>