Many If, Or statements in one formula

[Newton1234]

Hi,

I have a spreadsheet which I need to write a formula which looks at a field and if the number in the field starts with either 55, 50 or 78 it populates my selected field.

This is an example of what I am trying to do :

=If(Or(Left, B22, 2)+0=55, (Left, B22, 2)+0=50, (left, b22, 2)+0=78), "DEBIT ACCOUNT", "")

I appreciate any help to get this formula working.

Thanks