No problem, we've got 6419 and 6420 to multiply
6419 × 6420 = 6420 × (6419)
+ 6420 × 9 that results in 57780
+ 6420 × 10 that results in 64200
+ 6420 × 400 that is equal 2568000
+ 6420 × 6000 what gives us 38520000

= 41209980
