1. The problem statement, all variables and given/known data If one truck runs on 6000 barrels of oil per year, how many trucks could run on the oil produced in the US in one year (1.9*10^10 barrels)? 2. Relevant equations (6000 barrels/year) used by one truck (1.9*10^10 barrels/year) for US production 3. The attempt at a solution I simply divided 1.9*10^10 by 6000 to get 3,000,000. I'm confused about the fact that 3,000,000 is not in units of "trucks". How can I set up this problem properly to include trucks as my units?