The conversation between human and AI assistant.
[|Human|] Calculate the total price including sales tax for the item purchased.
[|AI|] The total price of the item including sales tax would be calculated as follows:

Sales tax amount = (50 * 8.875)/100 = $4.44

Total price of item including sales tax = Item price + Sales tax amount = 50 + 4.44 = $54.44
[|Human|] 
Calculate the total price including sales tax for the item purchased.