Zeynep borrows $$4500$ at $13\mathrm{.}75\%$ compounded quarterly on March $16,2020.$ How much must she repay on August $25,2030?$ Assume simple interest is allowed for part of a conversion period.

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$18860\mathrm{.}82$

Incorrect: Your answer is incorrect. This was the last answer chegg helped me with and it was wrong. To be clear my class is mathematics in finance. Please solve correctly. The assignment asks that the final answer is rounded to two decimals. Thanks