Alright, let's work through 72111564 times 75396891 step by step
72111564 × 75396891 = 75396891 × (72111564)
+ 75396891 × 4 that is equal 301587564
+ 75396891 × 60 producing 4523813460
+ 75396891 × 500 that equals 37698445500
+ 75396891 × 1000 giving us 75396891000
+ 75396891 × 10000 that results in 753968910000
+ 75396891 × 100000 which equals 7539689100000
+ 75396891 × 2000000 giving us 150793782000000
+ 75396891 × 70000000 what gives us 5277782370000000

= 5436987730747524
