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

### Instruction:
Colleen is making a batch of 48 cookies. She's going to add 108 chocolate chips and one-third as many M&Ms to the whole batch. What are the average number of chocolate pieces in each cookie?

### Response:
First find how many M&Ms to add: 108 chocolate chips / 3 chocolate chips / 1 M&M = <<108/3/1=36>>36 M&Ms
Then add those to the chocolate chips: 36 M&Ms + 108 chocolate chips = <<36+108=144>>144 chocolates
Then divide the total number of chocolates by the number of cookies to find the number of pieces per cookie: 144 chocolates / 48 cookies = <<144/48=3>>3 chocolates/cookie
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