No problem, we've got 2163 and 7859 to multiply
2163 × 7859 = 7859 × (2163)
+ 7859 × 3 which equals 23577
+ 7859 × 60 which equals 471540
+ 7859 × 100 which equals 785900
+ 7859 × 2000 producing 15718000

= 16999017
