A population of bacteria is doubling every four hours. At noon there are $600$ bacteria. If this rate continues, how many bacteria will be present at midnight, twelve hours later?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A population of bacteria is doubling every four hours. At noon there are $600$ bacteria. If this rate continues, how many bacteria will be present at midnight, twelve hours later?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4800
A population of bacteria is doubling every four hours. At noon there are $600$ bacteria. If this rate continues, how many bacteria will be present at midnight, twelve hours later?
train