I am currently working through the Thread Shed exercises.

Task 14 asks me to

Now, consider the list

`sales`

. It is a list ofstringsthat we want to sum. In order for us to sum these values, we will have to remove the`$`

, and set them equal to floats.Iterate through

`sales`

and for each item, strip off the`$`

, set it equal to a float, and add it to`total_sales`

and Task 15 asks me to print it.

My initial ‘sales’ list looks like this:

My code is

```
total_sales = 0
for sale in sales:
total_sales += float(sale.strip("$"))
print(total_sales)
```

This prints 1498.7400000000005.

I have two questions:

- Why is this happening? All of the numbers in the sales list stop at two decimal places, so a digit in the thirteenth ought to be impossible.
- How can it be fixed? I’ve searched through the previous questions on this exercise, and the closest answer I found was a link to Format Specification Mini-Language. That tells me how to ensure that my result is rounded to the second decimal place, but not how to actually fix the error.

Thank you very much.