No problem, we've got 6851 and 2221 to multiply
6851 × 2221 = 2221 × (6851)
+ 2221 × 1 what gives us 2221
+ 2221 × 50 that equals 111050
+ 2221 × 800 what gives us 1776800
+ 2221 × 6000 what gives us 13326000

= 15216071
