Alright, let's work through 84479460 times 54906451 step by step
84479460 × 54906451 = 54906451 × (84479460)
+ 54906451 × 0 that equals 0
+ 54906451 × 60 giving us 3294387060
+ 54906451 × 400 yielding 21962580400
+ 54906451 × 9000 what gives us 494158059000
+ 54906451 × 70000 resulting in 3843451570000
+ 54906451 × 400000 resulting in 21962580400000
+ 54906451 × 4000000 yielding 219625804000000
+ 54906451 × 80000000 giving us 4392516080000000

= 4638467330996460
