I need help on all 3 parts. Please write an explanation. Thanks.

Answer:
1. 8 cars
2.at least 14.4 cars
3.$64,800
Step-by-step explanation:
Part 1:
1. subtract 2,400 from 4,400
2. the answer is 2,000
3. divide 2,000 by 250
4. the answer is 8
Part 2:
1. 6,000-2,400=3,600
2. divide 3,600 by 250=14.4
Part 3:
1. multiply 250 by 12=3,00
2. add 3,000 to 2,400=5,400
3. multiply 5,400 by 12=64,800