calculated field with decimal place

Hello,

if I create calculated field in a table using formula e.g., ColumnName/ 60, where format of ColumnName is INT (total ammount of minutes)  in order to get hours, I get only integer part, not decimal. E.g., 80 (minutes)/60 =1.3333 but, in calculated field I see only 1 hrs without possibility to change format of the field.

Can calculated field be used on this way? (My wish  is to get 1.3 in that field)

How?

Thanks