Alright, let's work through 72449967 times 72688613 step by step
72449967 × 72688613 = 72688613 × (72449967)
+ 72688613 × 7 that is equal 508820291
+ 72688613 × 60 resulting in 4361316780
+ 72688613 × 900 resulting in 65419751700
+ 72688613 × 9000 which equals 654197517000
+ 72688613 × 40000 that equals 2907544520000
+ 72688613 × 400000 that equals 29075445200000
+ 72688613 × 2000000 that is equal 145377226000000
+ 72688613 × 70000000 that equals 5088202910000000

= 5266287613125771
