No problem, we've got 1397 and 4878 to multiply
1397 × 4878 = 4878 × (1397)
+ 4878 × 7 that equals 34146
+ 4878 × 90 that equals 439020
+ 4878 × 300 resulting in 1463400
+ 4878 × 1000 which equals 4878000

= 6814566
