Alright, let's work through 84906313 times 71520042 step by step
84906313 × 71520042 = 71520042 × (84906313)
+ 71520042 × 3 producing 214560126
+ 71520042 × 10 which equals 715200420
+ 71520042 × 300 yielding 21456012600
+ 71520042 × 6000 that results in 429120252000
+ 71520042 × 00000 producing 0
+ 71520042 × 900000 that results in 64368037800000
+ 71520042 × 4000000 that results in 286080168000000
+ 71520042 × 80000000 yielding 5721603360000000

= 6072503071825146
