Alright, let's work through 86474789 times 81476907 step by step
86474789 × 81476907 = 81476907 × (86474789)
+ 81476907 × 9 which equals 733292163
+ 81476907 × 80 resulting in 6518152560
+ 81476907 × 700 which equals 57033834900
+ 81476907 × 4000 producing 325907628000
+ 81476907 × 70000 resulting in 5703383490000
+ 81476907 × 400000 that equals 32590762800000
+ 81476907 × 6000000 which equals 488861442000000
+ 81476907 × 80000000 which equals 6518152560000000

= 7045698341197623
