No problem, we've got 2181 and 7710 to multiply
2181 × 7710 = 7710 × (2181)
+ 7710 × 1 that results in 7710
+ 7710 × 80 yielding 616800
+ 7710 × 100 what gives us 771000
+ 7710 × 2000 yielding 15420000

= 16815510
