17 divided by 4 leaves "1" over; 1 from 3 gives "2;" twice 2 is "4."

83 is 6 dozen and 11, giving 17; plus 2 gives 19, i.e. (dividing by 7),

"5." Total 9, i.e., "2."

The item for August is "8 from 10," i.e., "2;" so, for September, it is "2

plus 3," i.e., "5." Total 7, i.e., "0," which goes out.