Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Calculate the average age of the members of the “Piano Lesson Group”

### Input:
The members of the “Piano Lesson Group” are Maria (8 years old), Tyler (9 years old), Jessica (7 years old), and John (11 years old).

### Response:
The average age of the members of the ‘Piano Lesson Group’ is 8.75 years, calculated by adding the ages of each member and then dividing the result by 4.