They decided to hold the party in their backyard. They have 12 sets of tables and each set has 14 chairs. There are also 6 chairs extra. How many chairs do they have for the guests?
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There are 12 sets of tables and each set has 14 chairs. 
That means that there are a total of 168 chairs. 
There are also 6 chairs extra. 
That means that there are a total of 174 chairs.