No problem, we've got 1006 and 2143 to multiply
1006 × 2143 = 2143 × (1006)
+ 2143 × 6 which equals 12858
+ 2143 × 00 producing 0
+ 2143 × 000 what gives us 0
+ 2143 × 1000 yielding 2143000

= 2155858
