To find the exact number of trucks that the car dealer will need, we have to do the long division of 1006 and 12, to get the residue, which will be the numbers that will go on the last truck.
Then, we have the following:
notice that we have the quotient 83 with residue 10, this means that there will be needed 83 full truckloads with 10 cars in the truck 84