Alright, let's work through 72029819 times 63195281 step by step
72029819 × 63195281 = 63195281 × (72029819)
+ 63195281 × 9 which equals 568757529
+ 63195281 × 10 producing 631952810
+ 63195281 × 800 that is equal 50556224800
+ 63195281 × 9000 that equals 568757529000
+ 63195281 × 20000 yielding 1263905620000
+ 63195281 × 000000 what gives us 0
+ 63195281 × 2000000 what gives us 126390562000000
+ 63195281 × 70000000 that equals 4423669670000000

= 4551944652084139
