A bird eats 7 x 4 = <<7*4=28>>28 berries in 4 days.

So, 5 birds can eat 28 x 5 = <<28*5=140>>140 berries in 4 days.

# Answer

140
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A bird eats 7 berries a day. Samuel has 5 birds. How many berries do Samuel's birds eat in 4 days?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
140
A bird eats 7 berries a day. Samuel has 5 birds. How many berries do Samuel's birds eat in 4 days?
train