Substract column values with lowest number among them

[shyam100379]

Hi all

I have an excel with column value as below(sample)

3
4
6
7
empty cell
4
5
3
1
7
empty cell
4
5
empty cell
and more...

Actually i want it to reduce others with lowest number among them.. and after every empty cell, it should find the lowest numbr again and reduce it from others.. this should repeat until the column data completes..
after processing it should find as below

0
1
3
4
empty cell
3
4
2
0
6
empty cell
0
1
empty cell
Can anybody provide me any macro or excel formula for processing such a kind of excel.. please help..i need it asap.. empty cell works like a delimter..i think you got my query...
please help me..
thanks in adv...

[shyam100379]

Also please keep in mind that values may contain decimal one too.. ie 4.33, 6.55, etc like that...