No problem, we've got 4152 and 1643 to multiply
4152 × 1643 = 1643 × (4152)
+ 1643 × 2 that is equal 3286
+ 1643 × 50 that results in 82150
+ 1643 × 100 which equals 164300
+ 1643 × 4000 yielding 6572000

= 6821736
