No problem, we've got 3997 and 1143 to multiply
3997 × 1143 = 1143 × (3997)
+ 1143 × 7 what gives us 8001
+ 1143 × 90 that equals 102870
+ 1143 × 900 giving us 1028700
+ 1143 × 3000 resulting in 3429000

= 4568571
