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

### Instruction:
how many exposures where there when the total exposure time is 105,000s?

### Inputs:
table_name: table, columns: ['Camera', 'Filter', 'Wavelength', 'Total exposure time', 'Exposures']

### Response:
SELECT Exposures FROM table WHERE Total exposure time = 105,000s