Alright, let's work through 66899113 times 64243174 step by step
66899113 × 64243174 = 64243174 × (66899113)
+ 64243174 × 3 which equals 192729522
+ 64243174 × 10 resulting in 642431740
+ 64243174 × 100 that results in 6424317400
+ 64243174 × 9000 resulting in 578188566000
+ 64243174 × 90000 which equals 5781885660000
+ 64243174 × 800000 that results in 51394539200000
+ 64243174 × 6000000 producing 385459044000000
+ 64243174 × 60000000 that equals 3854590440000000

= 4297811356904662
