please solve in written not by finanicial calulater.i want in detail

Assignment Problem 1 (Page 90, question 8). Michael deposits $1000 at the end of each half-year for 5 years and then $2000 at the end of each half-year for 8 years. Determine the accumulated value of these deposites at the end of 13 years if interest is j2 = 7%. a2ni Assignment Problem 3 (Page 99, question 4). If $2ni: 1.6a7i and i = 10%, determine Assignment Problem 4 (Page 109, question 10). Determine the discounted value of of an ordinary annuity deferred 3 years, 6 months that pays $500 semi-annually for 7 years if interest is 7% compounded semi-annually