A) Number of 180⁰ bond angles existed in ${\mathrm{SF}}_6-\text{ molecule is }-"{\mathrm{X}}^{\prime \prime }$

B) Number of 90⁰ bond angles existed in ${\mathrm{XeF}}_{4 }-\text{ molecule is }-"\mathrm{Y}"$

C) Number of 180⁰ bond angles existed in ${\mathrm{I}}_2{\mathrm{Cl}}_6 \text{-molecule is }-"\mathrm{Z}"$

Then calculate the value of $\frac{\mathrm{x}\times \mathrm{y}}{\mathrm{z}}=?$