No problem, we've got 3173 and 6847 to multiply
3173 × 6847 = 6847 × (3173)
+ 6847 × 3 what gives us 20541
+ 6847 × 70 yielding 479290
+ 6847 × 100 what gives us 684700
+ 6847 × 3000 what gives us 20541000

= 21725531
