Alright, let's work through 72939539 times 63252642 step by step
72939539 × 63252642 = 63252642 × (72939539)
+ 63252642 × 9 that equals 569273778
+ 63252642 × 30 producing 1897579260
+ 63252642 × 500 what gives us 31626321000
+ 63252642 × 9000 giving us 569273778000
+ 63252642 × 30000 that is equal 1897579260000
+ 63252642 × 900000 yielding 56927377800000
+ 63252642 × 2000000 that is equal 126505284000000
+ 63252642 × 70000000 yielding 4427684940000000

= 4613618548012038
