We're going to solve 1255 multiplied by 6406
1255 × 6406 = 6406 × (1255)
+ 6406 × 5 what gives us 32030
+ 6406 × 50 that equals 320300
+ 6406 × 200 yielding 1281200
+ 6406 × 1000 resulting in 6406000

= 8039530
