Alright, let's work through 8316343 times 28738466 step by step
8316343 × 28738466 = 28738466 × (8316343)
+ 28738466 × 3 which equals 86215398
+ 28738466 × 40 yielding 1149538640
+ 28738466 × 300 producing 8621539800
+ 28738466 × 6000 giving us 172430796000
+ 28738466 × 10000 that equals 287384660000
+ 28738466 × 300000 yielding 8621539800000
+ 28738466 × 8000000 giving us 229907728000000

= 238998940549838
