evaluate
(1/3)^2 + 1/4 - (4/3)^2 * (1/2)^3
1/9 + 1/4 - 16/9 * 1/8
1/9 + 1/4 -128/72 + 9
1/9 + 1/4 - 137/72

I tried to do it myself. Would you please check my work?
Thank you very much!!