Let's calculate 1665 x 5257
1665 × 5257 = 5257 × (1665)
+ 5257 × 5 which equals 26285
+ 5257 × 60 that results in 315420
+ 5257 × 600 which equals 3154200
+ 5257 × 1000 resulting in 5257000

= 8752905
