A company periodically produces a part that is a basic component of an assembled product. Each time the part is run, a fixed cost of $$127$ is incurred. The cost to hold one unit for a week is estimated to be $$1\mathrm{.}57.$

Week Demand

$136$

$220$

$3110$

$418$

$5--$

$622$

$790$

For the demand $($net requirements$)$ shown above, determine the quantity and timing of production runs using the part$-$period method.

Produce $....$units in week $.....$

$.$

Produce $......$units in week $......$

$.$

Produce $.....$units in week $.........$

$.$