Thuan is saving up for the downpayment on a house. They will make weekly deposits of $1,050.00 (at the end of each period) into a savings account paying 6.30% compounded daily. After 24 periods, the interest rate changes to 6.80% (still compounded daily). How much money will they have in their account after 48 more periods (72 periods in total)? Use excel please!