The following results were obtained for an enzyme$-$catalyzed reaction

$\backslash$table$[[$Substrate concentration $(mmol{l}^{-1}),5\mathrm{.}0,6\mathrm{.}67,10\mathrm{.}0,20\mathrm{.}0,40\mathrm{.}0],[$Initial velocity $(mol{l}^{-1}mi{n}^{-1}),147,182,233,323,400]]$

Calculate $K_m$ and $V_{\text{m}\text{a}\text{x}}$