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Flint Corporation reported net sales $$555,000,$ cost of goods sold $$355,200,$ operating expenses $$128,000,$ and net income $$58,830.$

Calculate the profit margin and gross profit rate. $($Round Profit margin answer to $2$ decimal places, eg$.10\mathrm{.}20\%.$ Round Gross profit rate answer to $0$ decimal place, e$.$g$.10\%.)$

Profit margin

Gross profit rate