Alright, let's work through 3669 times 415 step by step
3669 × 415 = 415 × (3669)
+ 415 × 9 that results in 3735
+ 415 × 60 which equals 24900
+ 415 × 600 giving us 249000
+ 415 × 3000 which equals 1245000

= 1522635
