Alright, let's work through 72188985 times 68981869 step by step
72188985 × 68981869 = 68981869 × (72188985)
+ 68981869 × 5 producing 344909345
+ 68981869 × 80 yielding 5518549520
+ 68981869 × 900 that results in 62083682100
+ 68981869 × 8000 which equals 551854952000
+ 68981869 × 80000 that equals 5518549520000
+ 68981869 × 100000 giving us 6898186900000
+ 68981869 × 2000000 yielding 137963738000000
+ 68981869 × 70000000 resulting in 4828730830000000

= 4979731106512965
