Alright, let's work through 79878231 times 43215546 step by step
79878231 × 43215546 = 43215546 × (79878231)
+ 43215546 × 1 that results in 43215546
+ 43215546 × 30 resulting in 1296466380
+ 43215546 × 200 giving us 8643109200
+ 43215546 × 8000 that results in 345724368000
+ 43215546 × 70000 producing 3025088220000
+ 43215546 × 800000 giving us 34572436800000
+ 43215546 × 9000000 what gives us 388939914000000
+ 43215546 × 70000000 that equals 3025088220000000

= 3451981366179126
