Alright, let's work through 71120399 times 50942225 step by step
71120399 × 50942225 = 50942225 × (71120399)
+ 50942225 × 9 resulting in 458480025
+ 50942225 × 90 which equals 4584800250
+ 50942225 × 300 that is equal 15282667500
+ 50942225 × 0000 giving us 0
+ 50942225 × 20000 producing 1018844500000
+ 50942225 × 100000 yielding 5094222500000
+ 50942225 × 1000000 resulting in 50942225000000
+ 50942225 × 70000000 giving us 3565955750000000

= 3623031367947775
