Alright, let's work through 8993 times 6521 step by step
8993 × 6521 = 6521 × (8993)
+ 6521 × 3 what gives us 19563
+ 6521 × 90 what gives us 586890
+ 6521 × 900 that equals 5868900
+ 6521 × 8000 producing 52168000

= 58643353
