The volume of the container will be
For any given substance, density is defined as mass per unit of volume.
In your case, a density of
This is equivalent to saying that 12.2 g of your substance will occupy exactly
Notice that the mass of the substance is given in kilograms. This means that you have to convert it into grams in order to get to match the units given for density.
This means that the volume of the sample will be
Now, since you only gave one sig fig for the mass of the substance, the answer *should be * given as
However, I'll leave the answer with 2 sig figs because I suspect the mass of the substance was actually 0.80 kg
You can use whichever value fits your actual data.