Hammer Company proposes to invest $$6\mathrm{.}10$ million in a new type of hammermaking equipment. The fixed costs are $$1\mathrm{.}10$ million per year. The equipment will last for five years. The manufacturing cost per hammer is $$1\mathrm{.}50$ and each hammer sells for $$6\mathrm{.}50.$ The cost of capital is $20$ percent. Calculate the break$-$even $($i$.$e$.,$ NPV $=0)$ sales volume per year. $($Ignore taxes. Round to the nearest $1,000.)$

Multiple Choice

$520,000$ units

$570,000$ units

$670,000$ units

$620,000$ units