No problem, we've got 5621 and 1028 to multiply
5621 × 1028 = 1028 × (5621)
+ 1028 × 1 that is equal 1028
+ 1028 × 20 producing 20560
+ 1028 × 600 that results in 616800
+ 1028 × 5000 that is equal 5140000

= 5778388
