  Classical limit of multiple soft graviton theorem can be used to compute the
angular power spectrum of long wavelength gravitational radiation in classical
scattering provided the total energy carried away by the radiation is small
compared to the energies of the scatterers. We could ensure this either by
taking the limit in which the impact parameter is large compared to the
Schwarzschild radii of the scatterers, or by taking the probe limit where one
object (the probe) has mass much smaller than the other object (the scatterer).
We compute the results to subsubleading order in soft momentum and test them
using explicit examples involving classical scattering. Our analysis also
generalizes to the case where there are multiple objects involved in the
scattering and the objects exchange mass, fragment or fuse into each other
during the scattering. A similar analysis can be carried out for soft photons
to subleading order, reproducing standard textbook results. We also discuss the
modification of soft expansion in four dimensions beyond the leading order due
to infrared divergences.
