No problem, we've got 1477 and 8580 to multiply
1477 × 8580 = 8580 × (1477)
+ 8580 × 7 that equals 60060
+ 8580 × 70 yielding 600600
+ 8580 × 400 what gives us 3432000
+ 8580 × 1000 yielding 8580000

= 12672660
