No problem, we've got 4078 and 3877 to multiply
4078 × 3877 = 3877 × (4078)
+ 3877 × 8 that results in 31016
+ 3877 × 70 that is equal 271390
+ 3877 × 000 that results in 0
+ 3877 × 4000 which equals 15508000

= 15810406
