\[\boxed{\ \mathbf{1412}.\ }\]
\[1)\ 40 - (2,0592\ :0,072 - 19,63) =\]
\[= 31,03\]
\[2,0592\ :0,072 = 20\ 592\ :720 =\]
\[28,6 - 19,63 = 8,97\]
\[40 - 8,97 = 31,03\]
\[7,67\ :0,65 = 767\ :65 = 11,8\]
\[1,1628\ :0,57 =\]
\[= 11\ 628\ :5700 = 2,04\]
\[39 - 6,96 = 32,04\]
\[38,4\ :16 = 384\ :160 = 2,4\]
\[42,4 - 2,4 = 40\]
\[32,04\ :40 = 0,801\]