Alright, let's work through 6626 times 778 step by step
6626 × 778 = 778 × (6626)
+ 778 × 6 what gives us 4668
+ 778 × 20 that results in 15560
+ 778 × 600 that results in 466800
+ 778 × 6000 resulting in 4668000

= 5155028
