Answer: There are 402 windows that the company will wash on the first day.
Explanation:
Since we have given that
Number of windows = 3082
Number of floors on a building = 23
So, Number of windows on each floor is given by

If the company wash the windows on the first three floors on the first day.
So, Number of windows will the company wash on first day would be

Hence, there are 402 windows that the company will wash on the first day.