Alright, let's work through 6490 times 2123 step by step
6490 × 2123 = 2123 × (6490)
+ 2123 × 0 which equals 0
+ 2123 × 90 that is equal 191070
+ 2123 × 400 resulting in 849200
+ 2123 × 6000 giving us 12738000

= 13778270
