Does anybody know how to put in coordinates that are very specific?

I know how to do simple coordinates for flight across the Atlantic or Pacific that are something like 5540N. Those are easy. But on my currently flight I have the following waypoints

60N120W 55N122W 50N123W

You'll notice they are specific 122W and 123W, how are those entered? I've tried just about every format I can think of and still no cigar. I used 60N12, 55N12 and those were close but wrong and took me off course. Anybody know how to enter the more specific coordinates like this?