$($The answers are given under each specific question below, show me how they got that answer in order so I can complete a similar problem, make sure your answers match!$).$The gross requirements for Item X are specified for the beginning of weeks $1$ through $8$ in the table that follows. The product structure for the item is given in the figure: The lead time of each item is specified within square brackets. For example, the lead time for Item X is $1$ week. The number of units required for each lower level part is specified within parentheses. For example, each unit of Item B requires $1$ unit of Part C and $2$ units of Part D$.$

Product Structure for Item X

Item X

Week $1$ Week $2$ Week $3$ Week $4$ Week $5$ Week $6$ Week $7$ Week $8$

Gross Requirement $00000458030$

On$-$hand Inventory

Planned Order Release

There are no units in inventory and no scheduled receipts.

Complete the MRP calculations to determine the planned order releases for Item H$.($Note that Item H occurs twice on the product structure. Note also that you will need to complete the calculations for other items on the Product Structure.$)$

What is planned order release for Item H in Week $3?$

$($The answer is $260,$ how did they get that$)$ Specify the number of units.

What is planned order release for Item H in Week $4?$

$($The answer is $350,$ how did they get that$)$ Specify the number of units.

What is planned order release for Item H in Week $5?$

$($The answer is $120,$ how did they get that$)$ Specify the number of unit