Now, when my game counts the degrees, your method is even more quick.
I just measure the distance from the position to the appropriate degrees.
Divide by 2, to get the minutes.
The rest, multiply by 60 to get the seconds.
On these screens:
7° + 87 km and 478 m
87.478 / 2 = 43.739
43'
0.739 * 60 = 44.34
44''
=
07°43'44"E
Usually, in order to do the calculation more easy in mind, for the seconds I move decimal point and multiply by 6, like this:
0.739 > 7.39 or 7.4 * 6 = 44.4 = 44''
The result is the same.