No problem, we've got 2637 and 4879 to multiply
2637 × 4879 = 4879 × (2637)
+ 4879 × 7 what gives us 34153
+ 4879 × 30 yielding 146370
+ 4879 × 600 what gives us 2927400
+ 4879 × 2000 producing 9758000

= 12865923
