'Perform element-wise division on the operands, storing the
resultant values in the out Tensor. Each operand and out must have
identical shape or be broadcastable as such.
Arguments:
a (Tensor, numeric): left-hand side operand.
b (Tensor, numeric): right-hand side operand.
out (Tensor, optional): where the result will be stored. If out is
None, only the op-tree will be returned.
Returns:
OpTreeNode: the resulting op-tree'

@abc.abstractmethod
def divide(self, a, b, out=None):

    raise NotImplementedError()
