Alright, let's work through 72089793 times 74009763 step by step
72089793 × 74009763 = 74009763 × (72089793)
+ 74009763 × 3 what gives us 222029289
+ 74009763 × 90 producing 6660878670
+ 74009763 × 700 which equals 51806834100
+ 74009763 × 9000 giving us 666087867000
+ 74009763 × 80000 yielding 5920781040000
+ 74009763 × 000000 yielding 0
+ 74009763 × 2000000 that equals 148019526000000
+ 74009763 × 70000000 giving us 5180683410000000

= 5335348494649059
