George Robinson operates a kiosk in downtown Chicago, at which he sells one style of baseball hat. He buys the hats from a supplier for $$16$ and sells them for $$20.$ George$$s current breakeven point is $15,000$ hats per year.

D$.)$ If George wants to earn $$37,100$ in net income, how many hats must he sell, assuming a $30\%$ tax rate?