Alright, let's work through 64808545 times 64938034 step by step
64808545 × 64938034 = 64938034 × (64808545)
+ 64938034 × 5 producing 324690170
+ 64938034 × 40 that is equal 2597521360
+ 64938034 × 500 yielding 32469017000
+ 64938034 × 8000 producing 519504272000
+ 64938034 × 00000 that is equal 0
+ 64938034 × 800000 resulting in 51950427200000
+ 64938034 × 4000000 that results in 259752136000000
+ 64938034 × 60000000 that is equal 3896282040000000

= 4208539498700530
