Alright, let's work through 64447460 times 90649168 step by step
64447460 × 90649168 = 90649168 × (64447460)
+ 90649168 × 0 that is equal 0
+ 90649168 × 60 that is equal 5438950080
+ 90649168 × 400 which equals 36259667200
+ 90649168 × 7000 producing 634544176000
+ 90649168 × 40000 which equals 3625966720000
+ 90649168 × 400000 yielding 36259667200000
+ 90649168 × 4000000 producing 362596672000000
+ 90649168 × 60000000 yielding 5438950080000000

= 5842108628713280
