Alright, let's work through 72721795 times 81324282 step by step
72721795 × 81324282 = 81324282 × (72721795)
+ 81324282 × 5 yielding 406621410
+ 81324282 × 90 giving us 7319185380
+ 81324282 × 700 giving us 56926997400
+ 81324282 × 1000 resulting in 81324282000
+ 81324282 × 20000 which equals 1626485640000
+ 81324282 × 700000 resulting in 56926997400000
+ 81324282 × 2000000 that equals 162648564000000
+ 81324282 × 70000000 that results in 5692699740000000

= 5914047764126190
