The expression to compute the per cent of halogen X in an organic compound by the Carius method is

In Carius method, a known mass of organic compound with sulphur is heated in the presence of excess fuming nitric acid in a sealed Carius tube.The expression to compute the per cent of halogen X in an organic compound by the Carius method is $\frac{M_{\mathrm{X}}}{M_{\mathrm{AgX}}}\frac{m_{\mathrm{AgX}}}{m_{\text{compound }}}\times 100$.