A customs officer at the main port of SeaSide clearances counted 6721345 containers of imported vehicles, each having 5 vehicles inside. The next day, more containers were brought in, and the total…👇

A customs officer at the main port of SeaSide clearances counted 6721345 containers of imported vehicles, each having 5 vehicles inside. The next day, more containers were brought in, and the total number of vehicles at the port became 30. Calculate the number of containers that were imported on the second day, assuming all the containers contain 5 vehicles.