Alright, let's work through 2109680 times 85485320 step by step
2109680 × 85485320 = 85485320 × (2109680)
+ 85485320 × 0 producing 0
+ 85485320 × 80 producing 6838825600
+ 85485320 × 600 producing 51291192000
+ 85485320 × 9000 what gives us 769367880000
+ 85485320 × 00000 resulting in 0
+ 85485320 × 100000 producing 8548532000000
+ 85485320 × 2000000 that equals 170970640000000

= 180346669897600
