Alright, let's work through 6455 times 7770 step by step
6455 × 7770 = 7770 × (6455)
+ 7770 × 5 resulting in 38850
+ 7770 × 50 which equals 388500
+ 7770 × 400 resulting in 3108000
+ 7770 × 6000 producing 46620000

= 50155350
