No problem, we've got 2809 and 7942 to multiply
2809 × 7942 = 7942 × (2809)
+ 7942 × 9 giving us 71478
+ 7942 × 00 yielding 0
+ 7942 × 800 what gives us 6353600
+ 7942 × 2000 yielding 15884000

= 22309078
