\[\boxed{\text{36.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[12 \cdot (5 \cdot 7) = (12 \cdot 5) \cdot 7 =\]
\[= 60 \cdot 7 = 420.\]
\[29 \cdot (2 \cdot 5) = 29 \cdot 10 = 290.\]
\[35 \cdot (2 \cdot 7) = (35 \cdot 2) \cdot 7 =\]
\[= 70 \cdot 7 = 490.\]
\[17 \cdot (4 \cdot 10) = (17 \cdot 4) \cdot 10 =\]
\[= 68 \cdot 10 = 680.\ \]