Alright, let's work through 3890 times 8830 step by step
3890 × 8830 = 8830 × (3890)
+ 8830 × 0 that is equal 0
+ 8830 × 90 that is equal 794700
+ 8830 × 800 giving us 7064000
+ 8830 × 3000 giving us 26490000

= 34348700
