OVER ABSORBED AND UNDER ABSORBED COSTING

Question
A company makes and sells a single product. At the beginning of Period 1, there are no opening
inventories of the product, for which the variable production cost is $4 and the sales price $6 per unit.
There are no variable selling costs. Fixed costs are $2,000 per period, of which $1,500 are fixed
production costs. Normal output is 1,500 units per period. In Period 1, sales were 1,200 units, production
was 1,500 units. In Period 2, sales were 1,700 units, production was 1,400 units.
Required:
Prepare profit statements for each period and for the two periods in total using both absorption costing
and marginal costing.

Doubt:

How can I find the Over or Under absorbed over head ?

How to find gross profit?

How to find other costs?