The catalogue price of a computer set is ₹ 42000 . The shopkeeper gives a discount of $10\%$ on the listed price. He further gives an off-season discount of $5\%$ on the discounted price. However, sales tax at $8\%$ is charged on the remaining price after the two successive discounts. Find:
(i) the amount of sales tax a customer has to pay
(ii) the total price to be paid by the customer for the computer set.