Вычислите номер 503 пожалуйста!!!!

Решите задачу:

$1.( \frac{1}{6} + \frac{2}{3} ) \times 3 = \frac{5}{6} \times 3 = \frac{5}{2}$
$2.( \frac{17}{30} - \frac{2}{15} ) \div 13 = \frac{13}{30} \times \frac{1}{13} = \frac{1}{30}$
$3.( \frac{1}{8} + \frac{3}{4} ) \div 5 = \frac{7}{8} \times \frac{1 }{5} = \frac{7}{40}$
$( \frac{4}{3} + \frac{1}{9} ) \times 4 = \frac{13}{9} \times 4 = \frac{52}{9}$
$5.( \frac{1}{2} + \frac{1}{3} ) \times 2 = \frac{5}{6 } \times 2 = \frac{5}{3}$
$6.( \frac{1}{3} - \frac{1}{3} ) \times 3 = \frac{1}{6} \times 3 = \frac{1}{2}$