He pays 20*50=$<<20*50=1000>>1000 per semester

So he pays 1000*2=$<<1000*2=2000>>2000

# Answer

2000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
James takes 20 units per semester at community college.  If each unit costs $50 how much does he pay for 2 semesters?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2000
James takes 20 units per semester at community college.  If each unit costs $50 how much does he pay for 2 semesters?
train