Alright, let's work through 20041569 times 17997658 step by step
20041569 × 17997658 = 17997658 × (20041569)
+ 17997658 × 9 that is equal 161978922
+ 17997658 × 60 that equals 1079859480
+ 17997658 × 500 which equals 8998829000
+ 17997658 × 1000 that results in 17997658000
+ 17997658 × 40000 that equals 719906320000
+ 17997658 × 000000 which equals 0
+ 17997658 × 0000000 resulting in 0
+ 17997658 × 20000000 what gives us 359953160000000

= 360701304645402
