Question

1234,5 :123,4 5678,9 :456,7

Answer 1

1234.5:123.4 = 10.004
5678.9:456.7 = 12.43

Answer 2

It seems like you've provided a sequence of numbers separated by colons and spaces. It's not entirely clear what you'd like to do with these numbers or what information you're seeking. Please provide more context or specify your question so I can assist you better.