Alright, let's work through 56399879 times 74249937 step by step
56399879 × 74249937 = 74249937 × (56399879)
+ 74249937 × 9 that results in 668249433
+ 74249937 × 70 that results in 5197495590
+ 74249937 × 800 producing 59399949600
+ 74249937 × 9000 that results in 668249433000
+ 74249937 × 90000 giving us 6682494330000
+ 74249937 × 300000 resulting in 22274981100000
+ 74249937 × 6000000 that equals 445499622000000
+ 74249937 × 50000000 yielding 3712496850000000

= 4187687462557623
