Two Part Question: Part $1.....$A company had interest expense in $2023$ of $$12,450,000$ and is in a $21\%$ tax bracket. What is the after$-$tax cost of interest for this company? Part $2....$If this company had $$144,500,000$ of bonds outstanding paying interest, what would be the interest rate on those bonds? $($Both correct answers are required for credit$).$