No problem, we've got 6889 and 2289 to multiply
6889 × 2289 = 2289 × (6889)
+ 2289 × 9 what gives us 20601
+ 2289 × 80 what gives us 183120
+ 2289 × 800 that results in 1831200
+ 2289 × 6000 which equals 13734000

= 15768921
