In $1986,$ an explosion at the Chernobyl nuclear reactor released about $1,000$ kilograms of cesium$-137$ into the atmosphere. If the half$-$life is $30\mathrm{.}17$ years, and the amount remaining can be modeled by $A(t)=1000(\frac{1}{2}{)}^{\frac{t}{30\mathrm{.}17}}kg.$ How much remains in $2022?$ Label your answer and round to one decimal place.