Local Co$.$ has sales of $ $10\mathrm{.}3$ million and cost of sales of $ $5\mathrm{.}6$ million. Its$$ selling, general and administrative expenses are $$470,000$ and its research and development is $ $1\mathrm{.}5$ million. It has annual depreciation charges of $ $1\mathrm{.}1$ million and a tax rate of $35\%.$

a$.$ What is$$ Local's gross$$ margin?

b$.$ What is$$ Local's operating$$ margin?

c$.$ What is$$ Local's net profit$$ margin?

a$.$ What is$$ Local's gross$$ margin?

$$Local$\text{'}$s gross margin is$\_\_\_\_\_\_\_\_\%.($Round to one decimal$$ place.$)$