Aparticular brand of gasoline has a density of 0.737 g/ml at 25 ∘c. how many grams of this gasoline would fill a 12.3 gal tank (1us gal=3.78l)?

i do not understand how to approach the problem

Its a basic formula of density
Density equals mass in (kg) divided by volume in (L) so now you have both density and volume ( convert the volume to L)
Then find the mass ( but don't forget to convert it to gram at the last step ) ..
if you still don't know how to solve it ask me i will solve it for you .. ツ