No problem, we've got 6539 and 3023 to multiply
6539 × 3023 = 3023 × (6539)
+ 3023 × 9 what gives us 27207
+ 3023 × 30 yielding 90690
+ 3023 × 500 which equals 1511500
+ 3023 × 6000 what gives us 18138000

= 19767397
