Let's calculate 6580 x 6839
6580 × 6839 = 6839 × (6580)
+ 6839 × 0 that is equal 0
+ 6839 × 80 that results in 547120
+ 6839 × 500 which equals 3419500
+ 6839 × 6000 which equals 41034000

= 45000620
