Having difficulty making sure my numbers are correct for the Income statement with FIFO, LIFO, and weighted average, I cannot find the COGS and Gross profits with the income from operations..

Please help

Orion Iron Corp. tracks the number of units purchased and sold throughout each year but applies its inventory costing method at the end of the year, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31 Unit Transactions Units Cost 300 $14 a. Inventory, Beginning For the year b. Purchase, April 11 c. Purchase, June 1 d. Sale, May 1 (sold for $42 per unit) e. Sale, July 3 (sold for $42 per unit) f. Operating expenses (excluding income tax expense), $19,200 12 15 850 750 300 540