No problem, we've got 6393 and 819 to multiply
6393 × 819 = 819 × (6393)
+ 819 × 3 that is equal 2457
+ 819 × 90 that is equal 73710
+ 819 × 300 which equals 245700
+ 819 × 6000 that is equal 4914000

= 5235867
