Alright, let's work through 64112340 times 69909549 step by step
64112340 × 69909549 = 69909549 × (64112340)
+ 69909549 × 0 giving us 0
+ 69909549 × 40 that results in 2796381960
+ 69909549 × 300 giving us 20972864700
+ 69909549 × 2000 that results in 139819098000
+ 69909549 × 10000 that results in 699095490000
+ 69909549 × 100000 which equals 6990954900000
+ 69909549 × 4000000 that results in 279638196000000
+ 69909549 × 60000000 producing 4194572940000000

= 4482064774734660
