The second supplier receives 1 000 000 + 500 000 = 1 500 000 cars.
The third supplier receives 1 000 000 + 1 500 000 = 2 500 000 cars.
So the first to third suppliers receive a total of 1 000 000 + 1 500 000 + 2 500 000 = 5 000 000 cars.
Thus, 5 650 000 - 5 000 000 = 650 000 cars are left to be divided by the two other suppliers.
Therefore, the fourth and fifth suppliers receive 650 000/2 = 325 000 cars each.
#### 325,000