You are planning for your child's education.you would like to make deposits every $26$ weeks $($half year$)$ in Years $0$ through $21,$ with your first depodit to be made today $($a total of $43$ depositst, so that your child may make withdrawals in each of the Years $18$ throuph $21$ for Iution. tuition is currently $52800/$year$,$ and is expected to grow at $4\%$ for each of the next $10$ vears, and then at $5\%$ for each of vears $11$ thirough $21.$ You can earn a nominal annual rate of $8\mathrm{.}632\%,$ with interest compounded weekly $(52-$week year$)$ in a college savings account. How much must you deposit every $26$ weeks?