Alright, let's work through 3420 times 3149 step by step
3420 × 3149 = 3149 × (3420)
+ 3149 × 0 which equals 0
+ 3149 × 20 what gives us 62980
+ 3149 × 400 that results in 1259600
+ 3149 × 3000 that results in 9447000

= 10769580
