\[\boxed{\text{140.}}\]
\[0,38 \cdot 20 = 7,6\]
\[7,6\ :40 = 0,19\]
\[0,19 \cdot 60 = 11,4\]
\[11,4\ :30 = 0,038\]
\[\boxed{\text{141.}}\]
\[2\ 050 \cdot 20 = 41\ 000\]
\[3\ 050 \cdot 30 = 91\ 500\]
\[4\ 050 \cdot 40 = 162\ 000\]
\[5\ 050 \cdot 50 = 252\ 500\]
\[6\ 050 \cdot 60 = 363\ 000\]
\[7\ 050 \cdot 70 = 493\ 500\]
\[6\ 781 \cdot 11 = 74\ 591\]
\[6\ 782 \cdot 22 = 149\ 204\]
\[6\ 783 \cdot 33 = 223\ 839\]
\[6\ 784 \cdot 44 = 298\ 496\]
\[6\ 785 \cdot 55 = 373\ 155\]
\[6\ 786 \cdot 66 = 447\ 876\]