We're going to solve 1399 multiplied by 1263
1399 × 1263 = 1263 × (1399)
+ 1263 × 9 that equals 11367
+ 1263 × 90 that results in 113670
+ 1263 × 300 what gives us 378900
+ 1263 × 1000 that results in 1263000

= 1766937
