We need to convert this to degree-minutes-seconds. Once again, your calculator may be able to do this directly. As always, it is good to know what the calculator is doing for you.

58° = 58° (nothing to do here)

0.39 of 1° = 0.39 × 60' = 23.4'. This means `23` minutes and `0.4` of a minute left over. We still have a decimal portion, so we need to find `0.4` of `1` minute.

0.4 of 1' = 0.4 of 60" = 24".

Putting this together, we have 58.39° = 58°23'24".