No problem, we've got 84099770 and 51432746 to multiply
84099770 × 51432746 = 51432746 × (84099770)
+ 51432746 × 0 that is equal 0
+ 51432746 × 70 that results in 3600292220
+ 51432746 × 700 resulting in 36002922200
+ 51432746 × 9000 resulting in 462894714000
+ 51432746 × 90000 what gives us 4628947140000
+ 51432746 × 000000 that equals 0
+ 51432746 × 4000000 that results in 205730984000000
+ 51432746 × 80000000 yielding 4114619680000000

= 4325482109068420
