$$4 \cdot 3 = 12$$
$$6 : 2 = 3$$
$$7 - 8 = -1$$
$$27 : 3 = 9$$
$$6 \cdot 5 = 30$$
$$12 : 4 = 3$$
$$3 \cdot 6 = 18$$
$$56 : 8 = 7$$
$$9 \cdot 7 = 63$$
$$36 : 9 = 4$$
$$7 \cdot 7 = 49$$
$$15 : 5 = 3$$
$$6 \cdot 8 = 48$$
$$42 : 6 = 7$$
$$8 \cdot 9 = 72$$
$$64 : 8 = 8$$
$$2 \cdot 9 = 18$$
$$25 : 5 = 5$$
$$4 \cdot 5 = 20$$
$$36 : 6 = 6$$
$$8 \cdot 4 = 32$$
$$24 : 3 = 8$$
$$9 - 3 = 6$$
$$81 : 9 = 9$$
$$9 \cdot 5 = 45$$
$$32 : 4 = 8$$
$$5 \cdot 8 = 40$$
$$12 : 3 = 4$$
Ответ: 12, 3, -1, 9, 30, 3, 18, 7, 63, 4, 49, 3, 48, 7, 72, 8, 18, 5, 20, 6, 32, 8, 6, 9, 45, 8, 40, 4