No problem, we've got 1689 and 2443 to multiply
1689 × 2443 = 2443 × (1689)
+ 2443 × 9 that results in 21987
+ 2443 × 80 which equals 195440
+ 2443 × 600 resulting in 1465800
+ 2443 × 1000 that is equal 2443000

= 4126227
