A patient with untreated diabetes may have a blood concentration of acetone of 20mg/100mL. Determine the molar mass of acetone and use this number to convert this concentration to mol/L.

Okay, so I was able to determine the molar mass of acetone (= 58.09g/mol) however, i'm not sure how to get through the next part. Any help that you can give me would be greatly appreciated!

0.02g/100 = 0.20 g/L

mols = grams/molar mass
0.20/58.08 = mols.