Alright, let's work through 64427535 times 75407494 step by step
64427535 × 75407494 = 75407494 × (64427535)
+ 75407494 × 5 that is equal 377037470
+ 75407494 × 30 which equals 2262224820
+ 75407494 × 500 that is equal 37703747000
+ 75407494 × 7000 which equals 527852458000
+ 75407494 × 20000 yielding 1508149880000
+ 75407494 × 400000 that is equal 30162997600000
+ 75407494 × 4000000 yielding 301629976000000
+ 75407494 × 60000000 producing 4524449640000000

= 4858318958947290
