# Finding the Average

I want to Find the Average of Column J Columns A and H are formatted in "DD/MM/YY HH:MM"

The function in Column J is

=INT(I2-A2) & " days, " & HOUR(I2-A2) & " hrs, " & MINUTE(I2-A2) & " mins "

Now what i want to do is find the Average of Column J .. in the same format Average = xx days, xx hrs, xx mins

The normal function =AVERAGE(J2:J40) returns an error #DIV/0!

All help is appreciated, Thank you!