No problem, we've got 7839 and 662 to multiply
7839 × 662 = 662 × (7839)
+ 662 × 9 that results in 5958
+ 662 × 30 that is equal 19860
+ 662 × 800 resulting in 529600
+ 662 × 7000 that equals 4634000

= 5189418
