Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
John buys 3 spools of wire that are 20 feet each.  It takes 4 feet to make a necklace.  How many necklaces can he make?

### Response:
3 spools * 20 feet = <<3*20=60>>60 feet of wire
60 feet / 4 feet = <<60/4=15>>15 necklaces
#### 15

