Alright, let's work through 72138496 times 59969089 step by step
72138496 × 59969089 = 59969089 × (72138496)
+ 59969089 × 6 that is equal 359814534
+ 59969089 × 90 which equals 5397218010
+ 59969089 × 400 that equals 23987635600
+ 59969089 × 8000 producing 479752712000
+ 59969089 × 30000 which equals 1799072670000
+ 59969089 × 100000 that results in 5996908900000
+ 59969089 × 2000000 producing 119938178000000
+ 59969089 × 70000000 what gives us 4197836230000000

= 4326079886950144
