\(\left(1199\times1198+1998+1997\right)\times\left(1\frac{1}{2}:1\frac{1}{2}-1\frac{1}{3}\right)\)
\(=\left(1436402+1998+1997\right)\times\left(1-1-\frac{1}{3}\right)\)
\(=1440397\times\left(\frac{-1}{3}\right)\)
\(=\frac{-1440397}{3}\)
\(\left(1199\times1198+1998+1997\right)\times\left(1\frac{1}{2}:1\frac{1}{2}-1\frac{1}{3}\right)\)
\(=\left(1436402+1998+1997\right)\times\left(1-1-\frac{1}{3}\right)\)
\(=1440397\times\left(\frac{-1}{3}\right)\)
\(=\frac{-1440397}{3}\)