\[\boxed{\text{183\ (183).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[(140 - 80)\ :4 \cdot 5 = 75\]
\[(140 - 80\ :4) \cdot 5 = 600\]
\[140 - 80\ :(4 \cdot 5) = 136\]
\[8 \cdot 30 - 30\ :(3 \cdot 5) = 238\]
\[8 \cdot (30 - 30)\ :3 \cdot 5 = 0\]
\[(8 \cdot 30 - 30)\ :3 \cdot 5 = 350\]