No problem, we've got 2521 and 2043 to multiply
2521 × 2043 = 2043 × (2521)
+ 2043 × 1 what gives us 2043
+ 2043 × 20 that equals 40860
+ 2043 × 500 what gives us 1021500
+ 2043 × 2000 that results in 4086000

= 5150403
