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

### Instruction:
What's the mean attendance number when the record is 12-4 and the average is less than 10,027?

### Inputs:
table_name: table, columns: ['Season', 'Record', 'Pct.', 'Games', 'Attendance', 'Average', 'Sellouts']

### Response:
SELECT AVG Attendance FROM table WHERE Record = 12-4 AND Average < 10,027