No problem, we've got 2639 and 1901 to multiply
2639 × 1901 = 1901 × (2639)
+ 1901 × 9 which equals 17109
+ 1901 × 30 that is equal 57030
+ 1901 × 600 resulting in 1140600
+ 1901 × 2000 resulting in 3802000

= 5016739
