Alright, let's work through 2280 times 6364 step by step
2280 × 6364 = 6364 × (2280)
+ 6364 × 0 resulting in 0
+ 6364 × 80 what gives us 509120
+ 6364 × 200 what gives us 1272800
+ 6364 × 2000 giving us 12728000

= 14509920
