Since a day has 24 hours, the project was to take 24*4 = <<24*4=96>>96 hours.

Bill took 6 seven-hour naps during the four days, a total of 6*7 = <<6*7=42>>42 hours

The time he spent working on the project is 96-42 = <<96-42=54>>54 hours.

# Answer

54
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bill had to finish a project from work that was to take him 4 days. If he took 6 seven-hour naps in the four days, how long did he spend working on the project?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
54
Bill had to finish a project from work that was to take him 4 days. If he took 6 seven-hour naps in the four days, how long did he spend working on the project?
train