No problem, we've got 5391 and 1571 to multiply
5391 × 1571 = 1571 × (5391)
+ 1571 × 1 resulting in 1571
+ 1571 × 90 what gives us 141390
+ 1571 × 300 giving us 471300
+ 1571 × 5000 that equals 7855000

= 8469261
