During an eight$-$hour day in which the usable output was $340$ units, produced by $5$ workers who used $650$ pounds of materials. Workers have an hourly wage of $$16,$ and material cost is $$8$ per pound. Overhead is $2$ times labor cost.

$(1)$ What is the labor productivity per$-$worker per$-$hour?

$($two decimal places$)$

$(2)$ What is the multifactor productivity $($labor$,$ overhead, and materials$)?$

$($three decimal places$)$