Q4.1: Let's go to the bank Imagine that you work in the bank and sell different currency to the bank customers. Their requests will be stored in the list, banknotes, which will be represented as a list of 3 element tuples: I (eurrency1, cost1, quantityl), (eurzency2, cost2, quantity2), .(currencyN, costN, quantityN) ) For each bill you convert you charge a fee. You need to compute the total cost that the customer has to pay including your fee. You will do it in two steps. First, implement a function banknotes fees, that takes a banknotes list, your fee and adds this fee to each cost. We provided a few doc-tests for clarity Important: Your code must be one line solution (line break is fine if the line is too long) det banknotes fees (banknotes, fee) dds a fee to each item'n cost ih a "*n banknotes list b tK"dollar",4, 3), ("ruble", 10,4)1 >>> banknotes fees (bn, 10) >>> bn K"euro", 10, 7), ("yuan", 6, 40),("zupee", 3, 2) >> banknotes fees (bn, 2) ('euro',2,),'yuan, 8,40),C'rupee',5, 2)1 return