(√ 14 - 1.2) : 11/20 - (-5/2)^2 + 11/25 - 3/4

$(\sqrt{\frac{1}{4}} - 1, 2) \div \frac{11}{20} - {(- \frac{5}{2})}^{2} + 11, 25 - \frac{3}{4} |$