Convert a formula duration result into a numeric value

I am hiding some fields based on the duration of a period. When the duration exceeds 14 hours I have a field with the title "Duty time over 14 hours?" This is the field where I want it to return a number based on duration and then say "yes" if that is true (this is the part where the formula works by returning a number, but will not print out the "yes" response). That also triggers the hidden fields to appear so more information can be entered.