No problem, we've got 7993 and 578 to multiply
7993 × 578 = 578 × (7993)
+ 578 × 3 that is equal 1734
+ 578 × 90 which equals 52020
+ 578 × 900 which equals 520200
+ 578 × 7000 yielding 4046000

= 4619954
