How to insert a LandMark

I'm in difficult in putting land mark....

When I must insert the coordinates, I must insert it in formats +ddd.mmssss formats

45°39'10.01"N

12°18'6.43"E

If my coordinates are how I had to insert it in the forms?

format

your coordinates are:
45°39'10.01"N = 45.391001
12°18'6.43"E = 12.180643