Alright, let's work through 64812908 times 78442648 step by step
64812908 × 78442648 = 78442648 × (64812908)
+ 78442648 × 8 that is equal 627541184
+ 78442648 × 00 that results in 0
+ 78442648 × 900 that results in 70598383200
+ 78442648 × 2000 that is equal 156885296000
+ 78442648 × 10000 what gives us 784426480000
+ 78442648 × 800000 that equals 62754118400000
+ 78442648 × 4000000 resulting in 313770592000000
+ 78442648 × 60000000 giving us 4706558880000000

= 5084096128100384
