No problem, we've got 8380 and 6450 to multiply
8380 × 6450 = 6450 × (8380)
+ 6450 × 0 that is equal 0
+ 6450 × 80 that results in 516000
+ 6450 × 300 giving us 1935000
+ 6450 × 8000 resulting in 51600000

= 54051000
