Alright, let's work through 5182 times 3890 step by step
5182 × 3890 = 3890 × (5182)
+ 3890 × 2 which equals 7780
+ 3890 × 80 that results in 311200
+ 3890 × 100 that results in 389000
+ 3890 × 5000 that equals 19450000

= 20157980
