No problem, we've got 4531 and 6644 to multiply
4531 × 6644 = 6644 × (4531)
+ 6644 × 1 what gives us 6644
+ 6644 × 30 what gives us 199320
+ 6644 × 500 yielding 3322000
+ 6644 × 4000 yielding 26576000

= 30103964
