[Tutor] quick question

[jh]

Howdy Folks,

I'm using Python 3.2.3, IDLE 3.2.3 (on Windows 7 64-bit if it matters)

Here is my code:


# Write a program that asks for the prices of 5 items then displays the
subtotal
# of the 5 items, then calculates sales tax (6 percent), and the displays
the total.

# Get input for the prices of 5 items from the user

item1 = float(input('Enter the price of item 1: '))
item2 = float(input('Enter the price of item 2: '))
item3 = float(input('Enter the price of item 3: '))
item4 = float(input('Enter the price of item 4: '))
item5 = float(input('Enter the price of item 5: '))

# Calculate and print the subtotal of the items

subtotal = item1 + item2 + item3 + item4 + item5

print('The subtotal of your items is:', subtotal)

# Calculate sales tax and add it to the subtotal

tax = subtotal * .06
total = subtotal + tax

# Display the total to the user

print('The total amount of your items plus tax is:' , \
      format(total, ',.2f'))


And here's my output:

Enter the price of item 1: 12.36
Enter the price of item 2: 55.63
Enter the price of item 3: 32.36
Enter the price of item 4: 358.28
Enter the price of item 5: 25552.22
The subtotal of your items is: 26010.850000000002
The total amount of your items plus tax is: 27,571.50

My question here is, why does my subtotal have so many decimals when I never
went above 2 in my input? 

Thanks in advance,
J