No problem, we've got 84394491 and 46546228 to multiply
84394491 × 46546228 = 46546228 × (84394491)
+ 46546228 × 1 yielding 46546228
+ 46546228 × 90 which equals 4189160520
+ 46546228 × 400 which equals 18618491200
+ 46546228 × 4000 giving us 186184912000
+ 46546228 × 90000 that equals 4189160520000
+ 46546228 × 300000 resulting in 13963868400000
+ 46546228 × 4000000 what gives us 186184912000000
+ 46546228 × 80000000 giving us 3723698240000000

= 3928245220029948
