  The two stages dynamical stochastic model developed earlier for description
of fusion-fission reactions is applied to the calculation of mass- and
energy-distributions of fission fragments of platinum isotopes in reaction
${\rm ^{36}Ar + ^{142}Nd \to ^{178-x}Pt + xn}$. The first stage of this model
is the calculation of the approaching of projectile nucleus to the target
nucleus. On the second stage of the model, the evolution of the system formed
after the touching of the projectile and target nuclei is considered. The
evolution of the system on both stages is described by three-dimensional
Langevin equations for the shape parameters of the system. The mutual
orientation of the colliding ions and tunneling through the Coulomb barrier in
the entrance channel are also taken into account. The potential energy of the
system is calculated within the macroscopic-microscopic approach. The
calculated mass-energy distributions of fission fragments are compared with the
available experimental data. The impact of shell effects, rotation of the
system and neutron evaporation on the calculated results is discussed.
