No problem, we've got 1225 and 3600 to multiply
1225 × 3600 = 3600 × (1225)
+ 3600 × 5 resulting in 18000
+ 3600 × 20 that is equal 72000
+ 3600 × 200 that is equal 720000
+ 3600 × 1000 giving us 3600000

= 4410000
