How do you do this? I know that the Density equation is D=m/v but these are in kilograms and Liters...so do I convert it to grams and ml? Or do I just solve the equation like I normally would?

Explanation:
The problem doesn't specify that the units have to be g/mL, so you can calculate the density in kg/L without converting the mass or volume.
Just make sure that either way, you write the units.