KBr is doped with \( 10^{-5} \) mole percent of \( \mathrm{SrBr}_2 \). The number of cationic vacancies in \( 1 \ \text{g} \) of KBr crystal is ________ \( \times 10^{14} \). (Round off to the Nearest Integer) [Atomic Mass: \( \mathrm{K}: 39.1\,\text{u} \), \( \mathrm{Br}: 79.9\,\text{u} \), \( N_A = 6.023\times 10^{23} \)]
