Let's calculate 1986 x 3347
1986 × 3347 = 3347 × (1986)
+ 3347 × 6 which equals 20082
+ 3347 × 80 which equals 267760
+ 3347 × 900 that is equal 3012300
+ 3347 × 1000 that results in 3347000

= 6647142
