623 = (6 x 100) + (2 x 10) + (3 x 1)
24.92 = 623/25
105/623 + 74/89 = 1
only 1 and 623. 623 is not divisible by any number
You can always write a numerical division expression as a decimal.
409 + 623 = 1032
623
623
191
-81 + 623 = 542
3% of 623 is 18.69
1000 - 623 = 377