\mathrm{vol}({\Gamma\backslash G})f(0) + \frac{\mathrm{vol}(Q_{{\mathbb{Z}}} \backslash K )}{\mathrm{vol}(\mathrm{SO}_{n-0})} \mathrm{vol}(\mathrm{SL}_{n-0}( {\mathbb{Z}}) \backslash \mathrm{SL}_{n-0}( {\mathbb{R}})) \sum_{\ell >0} \int_{A'} 