# "Let the answer be" \ A. #
# "Then:" #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad A \ = \ 18 + ( 8 * 9 ) #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad = \ 18 + ( 72 ) #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad = \ 18 + 72 #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad = \ 90. #
# "So:" #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad A \ = \ 90. #
# "This is our answer." #