Lionel = 4 * 5280 = <<4*5280=21120>>21120 feet

Esther = 975 * 3 = <<975*3=2925>>2925 feet

Together = 21120 + 2925 + 1287 = <<21120+2925+1287=25332>>25332 feet

Together the friends walked 25332 feet.

# Answer

25332
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Lionel walked 4 miles. Esther walked 975 yards and Niklaus walked 1287 feet. How many combined feet did the friends walk?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
25332
Lionel walked 4 miles. Esther walked 975 yards and Niklaus walked 1287 feet. How many combined feet did the friends walk?
train