Let's calculate 6497 x 2591
6497 × 2591 = 2591 × (6497)
+ 2591 × 7 that is equal 18137
+ 2591 × 90 that equals 233190
+ 2591 × 400 that is equal 1036400
+ 2591 × 6000 that is equal 15546000

= 16833727
