Let's calculate 6689 x 7930
6689 × 7930 = 7930 × (6689)
+ 7930 × 9 what gives us 71370
+ 7930 × 80 that is equal 634400
+ 7930 × 600 that results in 4758000
+ 7930 × 6000 which equals 47580000

= 53043770
