4. Найдите значение числового выражения: 36/(0,5 · 2,4) − (7/18 − 19/24) : 5/72.

\[\frac{36}{0.5\cdot2.4}-\left(\frac{7}{18}-\frac{19}{24}\right):\frac{5}{72}\]

\[0.5\cdot2.4=1.2,\qquad \frac{36}{1.2}=30.\]

\[\frac{7}{18}-\frac{19}{24}=\frac{28}{72}-\frac{57}{72}=-\frac{29}{72}.\]

\[-\frac{29}{72}:\frac{5}{72}=-\frac{29}{72}\cdot\frac{72}{5}=-\frac{29}{5}.\]

\[30-\left(-\frac{29}{5}\right)=30+\frac{29}{5}=\frac{179}{5}=35.8.\]

Ответ: 35,8.