No problem, we've got 84486498 and 63208412 to multiply
84486498 × 63208412 = 63208412 × (84486498)
+ 63208412 × 8 producing 505667296
+ 63208412 × 90 what gives us 5688757080
+ 63208412 × 400 which equals 25283364800
+ 63208412 × 6000 which equals 379250472000
+ 63208412 × 80000 yielding 5056672960000
+ 63208412 × 400000 which equals 25283364800000
+ 63208412 × 4000000 giving us 252833648000000
+ 63208412 × 80000000 that results in 5056672960000000

= 5340257374021176
