No problem, we've got 4381 and 5625 to multiply
4381 × 5625 = 5625 × (4381)
+ 5625 × 1 yielding 5625
+ 5625 × 80 yielding 450000
+ 5625 × 300 giving us 1687500
+ 5625 × 4000 resulting in 22500000

= 24643125
