$1.$ This year, Benson Inc., will produce $43,250$ hot water heaters at its plant in Saskatchewan,

Saskatchewan, to meet expected global demand.

To accomplish this, each labourer at the Saskatoon plant will work $160$ hours per month for all $12$

months of the year.

If the labour productivity at the plant is $0\mathrm{.}25$ hot water heaters per labour$-$hour, how many labourers

are employed at the plant? $($Enter your response as a whole number.$)$