No problem, we've got 5424 and 8390 to multiply
5424 × 8390 = 8390 × (5424)
+ 8390 × 4 what gives us 33560
+ 8390 × 20 giving us 167800
+ 8390 × 400 yielding 3356000
+ 8390 × 5000 resulting in 41950000

= 45507360
