The formula for the typical scenario is (n-1)!. The n becomes 7 in this case, since the two people form a block (act as one). Then, multiply by their own permutations (2!). So, 6!2!, if there are no placeholders (name cards on the table). If this is the case, we are not just looking for the order, but actual seats. With placeholders, we also multiply by the number of people, which makes the formula equivalent to n!. So, in this case it would be 7!2!. Also, we usually assume clockwise is different than anticlockwise, so we refrain from dividing by 2.