Alright, let's work through 88780679 times 42261915 step by step
88780679 × 42261915 = 42261915 × (88780679)
+ 42261915 × 9 resulting in 380357235
+ 42261915 × 70 yielding 2958334050
+ 42261915 × 600 that results in 25357149000
+ 42261915 × 0000 producing 0
+ 42261915 × 80000 resulting in 3380953200000
+ 42261915 × 700000 that equals 29583340500000
+ 42261915 × 8000000 resulting in 338095320000000
+ 42261915 × 80000000 which equals 3380953200000000

= 3752041509540285
