Alright, let's work through 20072535 times 2103296 step by step
20072535 × 2103296 = 2103296 × (20072535)
+ 2103296 × 5 that equals 10516480
+ 2103296 × 30 that results in 63098880
+ 2103296 × 500 which equals 1051648000
+ 2103296 × 2000 that equals 4206592000
+ 2103296 × 70000 that equals 147230720000
+ 2103296 × 000000 that results in 0
+ 2103296 × 0000000 resulting in 0
+ 2103296 × 20000000 producing 42065920000000

= 42218482575360
