Freon$-12,C{F}_{2}C{l}_2,$ is a refrigerant whose use has largely been banned because it contributes to

ozone depletion. The chlorine atoms in Freon$-12$ are particularly harmful to the ozone layer. If

an old refrigerator leaks $18g$ of $C{F}_{2}C{l}_2$ each month, how many grams of chlorine does it release

into the atmosphere each year?