Alright, let's work through 81490495 times 68260482 step by step
81490495 × 68260482 = 68260482 × (81490495)
+ 68260482 × 5 that results in 341302410
+ 68260482 × 90 giving us 6143443380
+ 68260482 × 400 producing 27304192800
+ 68260482 × 0000 yielding 0
+ 68260482 × 90000 that results in 6143443380000
+ 68260482 × 400000 yielding 27304192800000
+ 68260482 × 1000000 which equals 68260482000000
+ 68260482 × 80000000 what gives us 5460838560000000

= 5562580467118590
