Convert from megadalton to carat [UK]

Unit Definition (megadalton)
The megadalton is a unit of mass equal to one million atomic mass units.

Unit Definition (carat [UK])
The carat [UK] is a unit of mass used for diamonds and other precious stones. In the U. S. and Britian, the diamond carat was formerly defined by law to be 3.2 troy grains, which is about 207 milligrams.