The candy bars cost 4*2= $<<4*2=8>>8.

Todd has 20-8= $<<20-8=12>>12 left.

# Answer

12
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
Todd has $20. He buys 4 candy bars that cost $2 each. How much money in dollars does Todd have left?
train