Answer:
2000000000 or 2 billion
Step-by-step explanation:
assuming that you multiply by 4 every time you should get 2 billion
8, 32, 125, 500, 2000, 8000 ,32000, 125000, 500000, 2000000, 8000000, 32000000, 125000000, 500000000, 2000000000
hope this helps
