Need a formula ASAP that will convert

3' 6 5/8" to 3.552 (NOTE: the spaces are necessary). This will be a "same cell" formula. I want to type in the x' x x/x" and have it convert to a decimal equivalent.

I've busted my head trying to do it...can't make it work...the drop downs in the "FORMAT CELLS" do not give a "DECIMAL" option...

Please advise ASAP.

Thank you.

NoSaint55