<human>:  Southton buries their time capsule 15 feet underground. Northton buries their time capsule 12 feet higher than 4 times the depth of the Southton time capsule. How deep is Northton's time capsule buried?
<bot>: How deep is Southton's capsule? ** First multiply the depth of Southton's capsule by 4: 15 feet * 4 = <<15*4=60>>60 feet
How deep is Northton's time capsule? ** Then subtract 12 feet to find the depth of Northton's time capsule: 60 feet - 12 feet = <<60-12=48>>48 feet
#### 48