Give the step-by-step reasoning process and then the final answer. A chair costs 1/7 of the cost of a table. If a table costs $140, how much will it cost to buy a table and 4 chairs?
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One chair costs $140 x 1 / 7 = $20. Four chairs cost $20 x 4 = $80. So a table and 4 chairs cost $140 + $80 = $220.
The final answer: 220.
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