Alright, let's work through 84405519 times 80058133 step by step
84405519 × 80058133 = 80058133 × (84405519)
+ 80058133 × 9 yielding 720523197
+ 80058133 × 10 that is equal 800581330
+ 80058133 × 500 what gives us 40029066500
+ 80058133 × 5000 that results in 400290665000
+ 80058133 × 00000 giving us 0
+ 80058133 × 400000 what gives us 32023253200000
+ 80058133 × 4000000 that is equal 320232532000000
+ 80058133 × 80000000 that results in 6404650640000000

= 6757348266036027
