Well, honey, if you take 10 away from 632, you get 622. It's simple math, darling.
Add 407 to 623 and you'll have your answer !... (It's more than a thousand !)
723
622
641
7,980,632
only 1 and 623. 623 is not divisible by any number
1, 2, 4, 8, 79, 158, 316, 632 all divide evenly into 632: 1 x 632 = 632 2 x 316 = 632 4 x 158 = 632 8 x 79 = 632
632.
409 + 623 = 1032
623
623