Answer:
Disable SSID Brodcasting, Lower Radio Power Levels, Enable MAC Filtering
You should or must stop 50 feet away from it.
itemCost = input("Enter cost of items: ")
totalCost = 15 * float(itemCost)
print(totalCost)
The first line gets the total cost of the item from the user. The second line calculates the cost of 15 of those items and stores that value in the variable totalCost. The last line is just to test that our calculation works. I hope this helps!