Give the step-by-step reasoning process and then the final answer. This year the Oscar swag bags include two diamond earrings that cost $6,000 each, a new iPhone that costs $2,000, and some designer scarves that each cost $1,500. If the total value of the swag bag is $20,000, how many scarves are there?
First find the total cost of the diamond earrings: $6,000 / earring * 2 earrings = $12,000. Then subtract the cost of the earrings and iPhone from the total cost of the bags to find the cost of all the scarves: $20,000 - $12,000 - $2,000 = $6,000. Then divide the total cost of the scarves by the cost per scarf to find the number of scarves: $6,000 / $1,500 / scarf = 4 scarves.
The final answer: 4.