Adding Machine Calculator

This adds a column of figures the way an adding machine does, printing a tape with the running total after every line. Type or paste the figures separated by commas, spaces or new lines; a minus sign subtracts and accounting brackets do the same, so (25.00) is read as minus 25. It returns the tape, the total, the added and subtracted subtotals, the largest and smallest entry, the average and an optional percentage added at the end. There is no keypad, so correcting a line means editing the list and running it again.