No problem, we've got 2143 and 1107 to multiply
2143 × 1107 = 1107 × (2143)
+ 1107 × 3 what gives us 3321
+ 1107 × 40 which equals 44280
+ 1107 × 100 that is equal 110700
+ 1107 × 2000 that equals 2214000

= 2372301
