A company conducts a concept test for a new product idea, surveying $1000$ respondents. Among them, $600$ express a strong interest in purchasing the product if it were available. The company estimates that only $70\%$ of interested respondents would purchase the product if it were available and they were aware of the product. The company anticipates achieving $80\%$ market awareness and $80\%$ availability. If the company estimates that each respondent would buy an average of $3$ units of the product and there are a total of $10$ million potential consumers, what would be the projected sales considering availability and awareness?

$6$ million

$4\mathrm{.}2$ million

$3\mathrm{.}36$ million

$2\mathrm{.}69$ million