No problem, we've got 4387 and 6474 to multiply
4387 × 6474 = 6474 × (4387)
+ 6474 × 7 that equals 45318
+ 6474 × 80 what gives us 517920
+ 6474 × 300 yielding 1942200
+ 6474 × 4000 that equals 25896000

= 28401438
