No problem, we've got 1567 and 8720 to multiply
1567 × 8720 = 8720 × (1567)
+ 8720 × 7 giving us 61040
+ 8720 × 60 what gives us 523200
+ 8720 × 500 that results in 4360000
+ 8720 × 1000 producing 8720000

= 13664240
