No problem, we've got 2505 and 6225 to multiply
2505 × 6225 = 6225 × (2505)
+ 6225 × 5 resulting in 31125
+ 6225 × 00 that results in 0
+ 6225 × 500 what gives us 3112500
+ 6225 × 2000 yielding 12450000

= 15593625
