Exporting contacts to excel

I am exporting my contacts folder to an excel file. I then copy info from
this file into a fresh excel document. When I do this I am not able to "click
on" to the email address in the excel file. When I go to the cell where the
address is it looks okay but when I look in the formula box there is some
sort of apostrophe ('). When I take it out (manually) I can then to the email
address and send. I have hundreds of these ' to take out. How do I do this?
.