Crowl Corporation is investigating automating a process by purchasing a machine for $$806,400$ that would have a $9$ year useful life and no salvage value. By automating the process, the company would save $$140,000$ per year in cash operating costs. The new machine would replace some old equipment that would be sold for scrap now, yielding $$22,600.$ The annual depreciation on the new machine would be $$89,600.$ The simple rate of return on the investment is closest to $($Ignore income taxes.$)$:

Multiple Choice

$11\mathrm{.}26\%$

$16\mathrm{.}86\%$

$6\mathrm{.}43\%$

$5\mathrm{.}26\%$