cell value in numbers displays date instead of formula value in currency
I use numbers frequently and a spreadsheet I use suddenly consistently displays a date (30 April 2017) instead of a sum value that always was there. I have tried changing the cell format back to currency, clearing all and resetting the formal deleting the row and inserting a new formula in another cell and this problem persists. Have quit and restarted numbers and whole computer. Not sure how this happened or how I can fix it.