Calculate 13 ° 19'42 '+ 6 ° 10'28' How to make a formula?

Calculate 13 ° 19'42 '+ 6 ° 10'28' How to make a formula?

Add degree and degree, minutes and minutes, seconds and seconds. It's 13 ° + 6 °, 19 '+ 10', 42 '+ 28'. The total is 19 ° 30'10 '