Alright, let's work through 5978 times 3390 step by step
5978 × 3390 = 3390 × (5978)
+ 3390 × 8 yielding 27120
+ 3390 × 70 yielding 237300
+ 3390 × 900 producing 3051000
+ 3390 × 5000 which equals 16950000

= 20265420
