Divide. Then fill in the missing number.

$\displaystyle{\left({7}{{x}}^{{3}}+{3}{{x}}^{{2}}-{7}{x}+{2}\right)}\div{\left({{x}}^{{2}}+{2}{x}+{1}\right)}={7}{x}-{11}+\frac{{{8}{x}+?}}{{{{x}}^{{2}}+{2}{x}+{1}}}\usepackage{cmbright}\Huge\$