Alright, let's work through 8351273 times 45720807 step by step
8351273 × 45720807 = 45720807 × (8351273)
+ 45720807 × 3 producing 137162421
+ 45720807 × 70 which equals 3200456490
+ 45720807 × 200 that is equal 9144161400
+ 45720807 × 1000 producing 45720807000
+ 45720807 × 50000 giving us 2286040350000
+ 45720807 × 300000 yielding 13716242100000
+ 45720807 × 8000000 which equals 365766456000000

= 381826941037311
