No problem, we've got 4478 and 1592 to multiply
4478 × 1592 = 1592 × (4478)
+ 1592 × 8 what gives us 12736
+ 1592 × 70 yielding 111440
+ 1592 × 400 which equals 636800
+ 1592 × 4000 which equals 6368000

= 7128976
