If there were four rows of twenty gold bars arranged in the safe, the total number of bars in the safe is 4*20 = <<4*20=80>>80 bars.

Since each gold bar is worth $20000, the 80 bars are worth 80*$20000 = $<<80*20000=1600000>>1,600,000

# Answer

1600000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Sam bought a heavy safe with a combination lock. There were four rows with twenty gold bars per row arranged in the safe. If each gold bar is worth $20000, calculate the total worth of the gold bars in the safe.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
1600000
Sam bought a heavy safe with a combination lock. There were four rows with twenty gold bars per row arranged in the safe. If each gold bar is worth $20000, calculate the total worth of the gold bars in the safe.
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