No problem, we've got 3970 and 6539 to multiply
3970 × 6539 = 6539 × (3970)
+ 6539 × 0 producing 0
+ 6539 × 70 what gives us 457730
+ 6539 × 900 resulting in 5885100
+ 6539 × 3000 that results in 19617000

= 25959830
