No problem, we've got 1789 and 6521 to multiply
1789 × 6521 = 6521 × (1789)
+ 6521 × 9 that equals 58689
+ 6521 × 80 producing 521680
+ 6521 × 700 what gives us 4564700
+ 6521 × 1000 yielding 6521000

= 11666069
