portion of your CE is the portion of * your construction expenditure that is attributable to the part of * your area that you used in the * 4% manner.
portion of your CE is the portion of * your construction expenditure that is attributable to the part of * your area that you did not use in the * 4% manner.
Add the aggregate of the amounts calculated under Steps 1 and 2.
Deduct the sum of those amounts from * your construction expenditure. The result is the undeducted construction expenditure for * your area.