Solution Stoichiometry? Intro---?

Calculate the Molarity: 15.5 ml glycerol, C3H8O3 (d=1.265g/ml) in 250 ml of solution. I got as far as 15.5 ml of glycerol is 19.61g, but I'm running around circled on what to do next. I thought all I had to do was take the gram and convert it into M, but that wasn't working? I got .213, but the back of the book says .9462.