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

### Instruction:
What is the average share for episodes with over 7.82 viewers, ranks of 3 and a weekly rank of 54?

### Inputs:
table_name: table, columns: ['Episode', 'Rating', 'Share', 'Rating/Share (18-49)', 'Viewers (millions)', 'Rank (Timeslot)', 'Rank (Night)', 'Rank (Week)']

### Response:
SELECT AVG Share FROM table WHERE Viewers (millions) > 7.82 AND Rank (Timeslot) = 3 AND Rank (Week) = 54