Alright, let's work through 8744390 times 81497403 step by step
8744390 × 81497403 = 81497403 × (8744390)
+ 81497403 × 0 that results in 0
+ 81497403 × 90 yielding 7334766270
+ 81497403 × 300 what gives us 24449220900
+ 81497403 × 4000 that equals 325989612000
+ 81497403 × 40000 resulting in 3259896120000
+ 81497403 × 700000 what gives us 57048182100000
+ 81497403 × 8000000 which equals 651979224000000

= 712645075819170
