The amoeba will divide into 1 * 2 = <<1*2=2>>2 amoebae after 2 days.

The amoeba will divide into 2 * 2 = <<2*2=4>>4 amoebae after 4 days.

The amoeba will divide into 4 * 2 = <<4*2=8>>8 amoebae after 6 days.

The amoeba will divide into 8 * 2 = <<8*2=16>>16 amoebae after 8 days.

# Answer

8
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
An amoeba reproduces by fission, splitting itself into two separate amoebae. An amoeba reproduces every two days. How many days will it take one amoeba to divide into 16 amoebae?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
8
An amoeba reproduces by fission, splitting itself into two separate amoebae. An amoeba reproduces every two days. How many days will it take one amoeba to divide into 16 amoebae?
train