If P means 'x', R means '+' T means '\[\div \]' and S means \['-',\] what is the value of \[\text{18}\,\,\text{T}\,\,\text{3}\,\,\text{P}\,\,\text{9}\,\,\text{S}\,\,\text{8}\,\,\text{R}\,\,\text{6?}\]

• A.  \[-1\frac{1}{3}\]                   
• B. 46      
• C. 52                  
• D. \[\frac{2}{3}\]