No problem, we've got 1791 and 3942 to multiply
1791 × 3942 = 3942 × (1791)
+ 3942 × 1 that equals 3942
+ 3942 × 90 that results in 354780
+ 3942 × 700 that equals 2759400
+ 3942 × 1000 that equals 3942000

= 7060122
