No problem, we've got 6393 and 4223 to multiply
6393 × 4223 = 4223 × (6393)
+ 4223 × 3 that results in 12669
+ 4223 × 90 what gives us 380070
+ 4223 × 300 that results in 1266900
+ 4223 × 6000 what gives us 25338000

= 26997639
