Alright, let's work through 5387 times 6457 step by step
5387 × 6457 = 6457 × (5387)
+ 6457 × 7 producing 45199
+ 6457 × 80 what gives us 516560
+ 6457 × 300 producing 1937100
+ 6457 × 5000 producing 32285000

= 34783859
