NEED HELP NEW TO PYTHON!!

[perfringo]

It is always good to have names. This makes comprehending much more easier for humans (computer doesn't care :-).

So you first iteration could become (EDIT: rates are changed compared to your example):

>>> meal = 8
>>> tax_rate = 0.15
>>> tip_rate = 0.13
>>> first = meal + (meal * tax_rate) + (meal * tip_rate)
>>> print(first)
10.239999999999998

Simple enough. Second iteration requires that tip would be calculated on amount of meal with tax amount. So it would be:

>>> second = meal + (meal * tax_rate) + ((meal + (meal * tax_rate)) * tip_rate)
>>> print(second)
10.395999999999999

As you can observe that this is quite complicated and we calculated meal * tax_rate twice. Modern Python enables us to use assignment expression to avoid this. We calculate tax amount and give it a name and then use this name in next calcuation. So it can be written:

>>> second = meal + (tax_amount := meal * tax_rate) + ((meal + tax_amount) * tip_rate)
>>> print(second)
10.395999999999999

And... Please use Python code tags!