Tell me what I have done wrong in solving this problem. There are several mistakes. Write out a correct solution to the problem.

I want to convert the concentration of a 5.67 % (m/v) solution to its equivalent concentration as %(m/m). The density of the solution has been measured to be 1.2 g/mL. My solution is

(5.67 % m/v) x 1.2 g/mL = 6.80 % (m/m).