Alright, let's work through 6455 times 3523 step by step
6455 × 3523 = 3523 × (6455)
+ 3523 × 5 what gives us 17615
+ 3523 × 50 that is equal 176150
+ 3523 × 400 which equals 1409200
+ 3523 × 6000 producing 21138000

= 22740965
