Related Clues:

• The A of VAT
• Part of V.A.T
• Added in the middle
• A trio of Democrats taking ecstasy carried on
• Calculated the total
• Obeyed a '+' sign
• Added something in
• Did sum math?
• Did some summing
• Extra, and a two-word hint to the answers to the starred clues
• Chimed in with
• More stuffed suffering a power outage
• No ___ sugar
• which were an ___ distraction
• Extra bill passed, one withdrawn