Related Clues:

• Problem in focusing, for short
• Calculate a total
• Find the total
• Make a summation?
• Tally up
• Arithmetic directive
• Use a plus sign
• Mention as an afterthought
• Calculate sums
• Do some simple calculating
• Do a summer's work?
• Compute, sometimes
• Write, as a P.S.
• Offer as a bonus
• Make a contribution