No problem, we've got 3172 and 6585 to multiply
3172 × 6585 = 6585 × (3172)
+ 6585 × 2 giving us 13170
+ 6585 × 70 which equals 460950
+ 6585 × 100 resulting in 658500
+ 6585 × 3000 giving us 19755000

= 20887620
