$(ii)$ $RCONHBr + KOH$ $\to$ $RNCO + KBr + H_2O$
$(iii)$ $RNCO + 2KOH$ $\to$ $RNH_2$ + $K_2CO_3$
$\overline{RCON{{H}_{2}}+B{{r}_{2}}+4KOH\to RN{{H}_{2}}+2KBr+{{K}_{2}}C{{O}_{3}}+2{{H}_{2}}O}$