Let's calculate 1223 x 1583
1223 × 1583 = 1583 × (1223)
+ 1583 × 3 which equals 4749
+ 1583 × 20 which equals 31660
+ 1583 × 200 that results in 316600
+ 1583 × 1000 that results in 1583000

= 1936009
