No problem, we've got 1397 and 6357 to multiply
1397 × 6357 = 6357 × (1397)
+ 6357 × 7 that results in 44499
+ 6357 × 90 producing 572130
+ 6357 × 300 giving us 1907100
+ 6357 × 1000 that results in 6357000

= 8880729
