How to use perpentual inventory

Learning Objective: Able to apply accounting cycles for services and merchandise company. During July 2020, the following transactions were completed. 1 03-Jul-20 Seller sold merchandise of Rp18,000, FOB Penjual menjual barang seharga Rp18,000 ke shipping point, term 3/10, n/30. COGS is Pembeli. FOB shipping point, termin 3/10, n/30. 60% of sales price. Beban pokok penjualan 60% dari harga jual barang. 2 04-Jul-20 Paid freight on transaction above, Rp1,300. Membayar ongkos kirim transaksi di atas, Rp1,300. 3 05-Jul-20 Buyer returned defective products of Pembeli mengembalikan barang yang cacat Rp2,000 senilai Rp2,000. 4 12-Jul-20 Buyer paid Seller in full Pembeli membayar seluruh tagihan ke Penjual. 5 16-Jul-20 Seller sold merchandise of Rp16.200, FOB Penjual menjual barang seharga Rp16.200. FOB destination, term 2/10, n/60. COGS is 70% destination, termin 2/10, n/60. Beban pokok of sales price. penjualan 70% dari harga jual barang. 6 17-Jul-20 Paid freight on transaction above, Rp1,500. Membayar ongkos kirim transaksi di atas, Rp1,500. 7 27-Jul-20 Buyer paid Seller in full Pembeli membayar seluruh tagihan ke Penjual. 8 28-Jul-20 Seller gave cash refund of Rp600 to Buyer Penjual memberikan pengembalian tunai Rp600 for damaged merchandise (from transaction kepada Pembeli sebagai kompensasi barang yang No. 5) after paid in full. Buyer agreed to rusak. Pembeli setuju untuk tidak meretur barang keep the merchandise secara fisik kepada Penjual. Instruction: Journalize the transactions using perpetual inventory method for both BUYER and SELLER (8 x 2 = 16 journal entries)