No problem, we've got 2487 and 6658 to multiply
2487 × 6658 = 6658 × (2487)
+ 6658 × 7 giving us 46606
+ 6658 × 80 which equals 532640
+ 6658 × 400 that is equal 2663200
+ 6658 × 2000 yielding 13316000

= 16558446
