Alright, let's work through 2780 times 3209 step by step
2780 × 3209 = 3209 × (2780)
+ 3209 × 0 that equals 0
+ 3209 × 80 yielding 256720
+ 3209 × 700 producing 2246300
+ 3209 × 2000 giving us 6418000

= 8921020
