\[\boxed{\mathbf{4.131}}\]
\[\textbf{а)}\ 4 \cdot 16 = 64 + 11 = 75\ :15 =\]
\[= 5 \cdot 2 = 10\ :2 = 5.\]
\[\textbf{б)}\ 19 \cdot 3 = 57 - 9 = 48\ :12 =\]
\[= 4 \cdot 25 = 100\ :50 = 2.\]
\[\textbf{в)}\ 32 \cdot 3 = 96\ :48 = 2 \cdot 15 =\]
\[= 30 \cdot 3 = 90\ :45 = 2.\]
\[\textbf{г)}\ 4 \cdot 14 = 56 + 40 = 96\ :48 =\]
\[= 2 \cdot 35 = 70\ :5 = 14.\]
\[\textbf{д)}\ 2 \cdot 26 = 52 - 7 = 45\ :3 =\]
\[= 15 \cdot 6 = 90\ :5 = 18.\]