Answer:
81000000
Step-by-step explanation:
bracket one
3^2 = 9
9^2 = 81
bracket two
10^3 = 1000
1000^2 = 1000000
81 × 1000000 = 81,000,000
im not very good at explaining but ive tried to break it into parts just to make it a bit simpler to understand :)
