No problem, we've got 8670 and 1580 to multiply
8670 × 1580 = 1580 × (8670)
+ 1580 × 0 which equals 0
+ 1580 × 70 which equals 110600
+ 1580 × 600 that results in 948000
+ 1580 × 8000 yielding 12640000

= 13698600
