No problem, we've got 3906 and 2540 to multiply
3906 × 2540 = 2540 × (3906)
+ 2540 × 6 that is equal 15240
+ 2540 × 00 that equals 0
+ 2540 × 900 giving us 2286000
+ 2540 × 3000 giving us 7620000

= 9921240
