No problem, we've got 5541 and 1391 to multiply
5541 × 1391 = 1391 × (5541)
+ 1391 × 1 which equals 1391
+ 1391 × 40 that equals 55640
+ 1391 × 500 that equals 695500
+ 1391 × 5000 which equals 6955000

= 7707531
