\[\boxed{\text{147.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[36 \cdot 14 = 35 \cdot (10 + 4) =\]
\[= 35 \cdot 10 + 35 \cdot 4 =\]
\[= 350 + 140 = 490.\]
\[35 \cdot 40 = 35 \cdot (4 \cdot 10) =\]
\[= (35 \cdot 4) \cdot 10 = 140 \cdot 10 =\]
\[= 1\ 400.\]
\[16 \cdot 20 = 16 \cdot (2 \cdot 10) =\]
\[= (16 \cdot 2) \cdot 10 = 32 \cdot 10 = 320.\]
\[16 \cdot 12 = 16 \cdot (10 + 2) =\]
\[= 16 \cdot 10 + 16 \cdot 2 =\]
\[= 160 + 32 = 192.\ \]