Alright, let's work through 64575679 times 70818818 step by step
64575679 × 70818818 = 70818818 × (64575679)
+ 70818818 × 9 what gives us 637369362
+ 70818818 × 70 giving us 4957317260
+ 70818818 × 600 that equals 42491290800
+ 70818818 × 5000 resulting in 354094090000
+ 70818818 × 70000 producing 4957317260000
+ 70818818 × 500000 that equals 35409409000000
+ 70818818 × 4000000 producing 283275272000000
+ 70818818 × 60000000 giving us 4249129080000000

= 4573173258327422
