\[ 80 - (54 - 4) = 80 - 50 = 30 \]
\[ 9 * 4 + 20 = 36 + 20 = 56 \]
\[ 32 : 8 = 4 \]
\[ (6 + 3) * 3 = 9 * 3 = 27 \]
Ответ: 30, 56, 4, 27