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

### Instruction:
What is the average number of floors at 170 Fourth Avenue North?

### Inputs:
table_name: table, columns: ['Name', 'Street Address', 'Years as tallest', 'Height ft / m', 'Floors']

### Response:
SELECT AVG Floors FROM table WHERE Street Address = 170 fourth avenue north