No problem, we've got 1991 and 2149 to multiply
1991 × 2149 = 2149 × (1991)
+ 2149 × 1 that equals 2149
+ 2149 × 90 that equals 193410
+ 2149 × 900 that equals 1934100
+ 2149 × 1000 that results in 2149000

= 4278659
