Alright, let's work through 88729921 times 75681771 step by step
88729921 × 75681771 = 75681771 × (88729921)
+ 75681771 × 1 yielding 75681771
+ 75681771 × 20 which equals 1513635420
+ 75681771 × 900 giving us 68113593900
+ 75681771 × 9000 producing 681135939000
+ 75681771 × 20000 what gives us 1513635420000
+ 75681771 × 700000 resulting in 52977239700000
+ 75681771 × 8000000 that equals 605454168000000
+ 75681771 × 80000000 giving us 6054541680000000

= 6715237561970091
