what is the answer for 9=a x 1.157^255
9=a*1.157^255 = a=(3/4708529307658828), or 0.0000000000000006
9=a x 1.157^255 divide both sides by 1.157^255
a=9 / [1.157^255]
a=6.37141621 X 10^-16
