Alright, let's work through 8470815 times 21177836 step by step
8470815 × 21177836 = 21177836 × (8470815)
+ 21177836 × 5 resulting in 105889180
+ 21177836 × 10 that equals 211778360
+ 21177836 × 800 resulting in 16942268800
+ 21177836 × 0000 producing 0
+ 21177836 × 70000 producing 1482448520000
+ 21177836 × 400000 yielding 8471134400000
+ 21177836 × 8000000 which equals 169422688000000

= 179393530856340
