Alright, let's work through 6890 times 6990 step by step
6890 × 6990 = 6990 × (6890)
+ 6990 × 0 giving us 0
+ 6990 × 90 resulting in 629100
+ 6990 × 800 resulting in 5592000
+ 6990 × 6000 producing 41940000

= 48161100
