Alright, let's work through 75218703 times 64108263 step by step
75218703 × 64108263 = 64108263 × (75218703)
+ 64108263 × 3 yielding 192324789
+ 64108263 × 00 which equals 0
+ 64108263 × 700 producing 44875784100
+ 64108263 × 8000 what gives us 512866104000
+ 64108263 × 10000 yielding 641082630000
+ 64108263 × 200000 which equals 12821652600000
+ 64108263 × 5000000 resulting in 320541315000000
+ 64108263 × 70000000 yielding 4487578410000000

= 4822140394442889
