$($Chapter $9)$ Thai Sai reports Profit Before Tax of $6\mathrm{.}41$ million. Tax Rate is $22\%$ and depreciation expenses of $$1$ million, and Net Working Capital decreased by $$0\mathrm{.}9$ million. What is the Thai Sai $\text{'}$s free cash flow for the year?

$$8$ million

$$6\mathrm{.}1$ million

$$6\mathrm{.}9$ million

$$9\mathrm{.}1$ million

$$4\mathrm{.}9$ million