Alright, let's work through 6215 times 8297 step by step
6215 × 8297 = 8297 × (6215)
+ 8297 × 5 resulting in 41485
+ 8297 × 10 producing 82970
+ 8297 × 200 what gives us 1659400
+ 8297 × 6000 producing 49782000

= 51565855
