Alright, let's work through 81296120 times 74739654 step by step
81296120 × 74739654 = 74739654 × (81296120)
+ 74739654 × 0 yielding 0
+ 74739654 × 20 resulting in 1494793080
+ 74739654 × 100 resulting in 7473965400
+ 74739654 × 6000 giving us 448437924000
+ 74739654 × 90000 that results in 6726568860000
+ 74739654 × 200000 producing 14947930800000
+ 74739654 × 1000000 that results in 74739654000000
+ 74739654 × 80000000 producing 5979172320000000

= 6076043880342480
