Hi

I need a simple fórmula that takes a value from a cell (A1 would be fine)
and put a value to other Cell (A2 it's ok) considering what this number is,
and then assigning a value from this table:

msgs value
10000 10
5000 10
4000 9
3000 9
2500 9
2000 8
1500 7
1200 6
1000 5
800 5
600 4
400 3
300 3
200 2
100 1
50 1
0 0


IE: if the A1 cell value is 5500 messages, A2 should be 10
If A1 cell value is 3500 messages, A2 should be 9 and so on.

How can I do that?