No problem, we've got 2715 and 6639 to multiply
2715 × 6639 = 6639 × (2715)
+ 6639 × 5 that is equal 33195
+ 6639 × 10 that results in 66390
+ 6639 × 700 producing 4647300
+ 6639 × 2000 giving us 13278000

= 18024885
