Solve for $Y$ :

Do not round interim steps, do not write numbers down and reenter them in your calculator.

Store all interim values in your calculator. You should be able to produce an answer that is

accurate to at least $11$ decimal places $($this is how many decimals the BA II saves$).$

Enter your final answer rounded to $4$ decimal places error margins here are close to zero.

$Y=\frac{311}{[1+(\frac{0\mathrm{.}11}{4}){]}^{(44)}}-\frac{73}{[1+(\frac{0\mathrm{.}03}{2}){]}^{(172)}}+63[1+(\frac{0\mathrm{.}06}{12}){]}^{(1112)}$