Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many values for founded when enrollment is 850?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Enrolment', 'Founded', 'Denomination', 'Boys/Girls', 'Day/Boarding', 'School Colors']

### Response:
SELECT COUNT Founded FROM table WHERE Enrolment = 850