No problem, we've got 2138 and 6880 to multiply
2138 × 6880 = 6880 × (2138)
+ 6880 × 8 what gives us 55040
+ 6880 × 30 producing 206400
+ 6880 × 100 what gives us 688000
+ 6880 × 2000 which equals 13760000

= 14709440
