307 / 1,000 = 0.307
307 grams is about 10.83 oz (10.8291063 oz to be exact) http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4TSHB_enUS292US292&q=how+many+ounces+in+307+grams
4.5 grams = 4,500 mg
1.2 mg = 0.0012 grams
17 mg is .017 grams
0.751 grams is 751 mg.
There are 12,350 mg in 12.35 grams.
280mg is 0.28 grams (divide mg by 1,000 to get grams).
855mg is 0.855 grams (mg x 0.001 = grams).
87.6 mg = 0.0876 grams
3,675 mg = 3.675 grams
how many grams in 99mg
925 milligrams = 0.925 grams