\[ 21851-217663=-195812,\qquad 415498:83=5006 \] \[ 2010201-5006-\frac{616528}{195812} =\boxed{\frac{98160156703}{48953}} \]

\[ 2010201-5006=2005195,\qquad \frac{616528}{195812}=\frac{154132}{48953} \]

\[ 2005195-\frac{154132}{48953} =\boxed{\frac{98160156703}{48953}} \]