\[\boxed{\text{140.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[7 \cdot (10 + 4) = 7 \cdot 10 + 7 \cdot 4 =\]
\[= 70 + 28 = 98.\]
\[8 \cdot (5 + 3) = 8 \cdot 5 + 8 \cdot 3 =\]
\[= 40 + 24 = 64.\]
\[6 \cdot (20 + 5) = 6 \cdot 20 + 6 \cdot 5 =\]
\[= 120 + 30 = 150.\]
\[19\ \cdot (7 + 3) = 19 \cdot 10 = 190.\ \]