No problem, we've got 2142 and 6111 to multiply
2142 × 6111 = 6111 × (2142)
+ 6111 × 2 what gives us 12222
+ 6111 × 40 that is equal 244440
+ 6111 × 100 resulting in 611100
+ 6111 × 2000 yielding 12222000

= 13089762
