Решение:
$$204 \cdot 3 = 612$$
$$720 : 8 = 90$$
$$170 \cdot 2 = 340$$
$$130 \cdot 4 = 520$$
$$360 : 4 = 90$$
$$560 : 7 = 80$$
Ответ:
$$204 \cdot 3 = \textbf{612}$$
$$720 : 8 = \textbf{90}$$
$$170 \cdot 2 = \textbf{340}$$
$$130 \cdot 4 = \textbf{520}$$
$$360 : 4 = \textbf{90}$$
$$560 : 7 = \textbf{80}$$