Alright, let's work through 13420905 times 72194592 step by step
13420905 × 72194592 = 72194592 × (13420905)
+ 72194592 × 5 yielding 360972960
+ 72194592 × 00 which equals 0
+ 72194592 × 900 resulting in 64975132800
+ 72194592 × 0000 resulting in 0
+ 72194592 × 20000 which equals 1443891840000
+ 72194592 × 400000 yielding 28877836800000
+ 72194592 × 3000000 giving us 216583776000000
+ 72194592 × 10000000 producing 721945920000000

= 968916760745760
