Let's calculate 7780 x 5818
7780 × 5818 = 5818 × (7780)
+ 5818 × 0 that results in 0
+ 5818 × 80 what gives us 465440
+ 5818 × 700 resulting in 4072600
+ 5818 × 7000 what gives us 40726000

= 45264040
