I need help putting this into a journal entry

1. Record the cash sales of $500,000.

2.Record the cost of goods sold of $224,350.

3.Record the return by a customer of unsatisfactory merchandise that was in perfect condition. A cash refund of $3,000 was given to the customer.

4.Record the merchandise returned by the customer back into inventory. The original cost of the merchandise was $1,900.

5.Record the sales on account of $5,000 on terms 2/10, n/30.

6.Record the cost of goods sold of $3,000.

7.Record the collection of half of the balance of $2,450 owed by the customer within the discount period.

8.Record the allowance of $950 granted to the customer.