Alright, let's work through 78197110 times 72449097 step by step
78197110 × 72449097 = 72449097 × (78197110)
+ 72449097 × 0 producing 0
+ 72449097 × 10 yielding 724490970
+ 72449097 × 100 that is equal 7244909700
+ 72449097 × 7000 giving us 507143679000
+ 72449097 × 90000 what gives us 6520418730000
+ 72449097 × 100000 what gives us 7244909700000
+ 72449097 × 8000000 yielding 579592776000000
+ 72449097 × 70000000 producing 5071436790000000

= 5665310007509670
