Let's calculate 1247 x 1777
1247 × 1777 = 1777 × (1247)
+ 1777 × 7 that is equal 12439
+ 1777 × 40 that results in 71080
+ 1777 × 200 that results in 355400
+ 1777 × 1000 which equals 1777000

= 2215919
