Choose 6 numbers from 2, 3, 4, 5, 6, 7 and 8 to form two three-digit numbers, so that their sum is the smallest. What is the sum?
从2、3、4、5、6、7和8中选出6个数字组成两个三位数，使它们的和最小，这个和是多少．
<gadget id="calculator">246 + 357</gadget>
<output>603</output>

<result>603</result>