No problem, we've got 6473 and 6389 to multiply
6473 × 6389 = 6389 × (6473)
+ 6389 × 3 what gives us 19167
+ 6389 × 70 that is equal 447230
+ 6389 × 400 yielding 2555600
+ 6389 × 6000 giving us 38334000

= 41355997
