No problem, we've got 6891 and 2378 to multiply
6891 × 2378 = 2378 × (6891)
+ 2378 × 1 that equals 2378
+ 2378 × 90 that results in 214020
+ 2378 × 800 what gives us 1902400
+ 2378 × 6000 resulting in 14268000

= 16386798
