No problem, we've got 1441 and 3891 to multiply
1441 × 3891 = 3891 × (1441)
+ 3891 × 1 that is equal 3891
+ 3891 × 40 what gives us 155640
+ 3891 × 400 yielding 1556400
+ 3891 × 1000 that is equal 3891000

= 5606931
