1. An operator assistance system for an agricultural machine having at least one variable operating parameter which influences a plurality of different result parameters of the working result of the machine, the operator assistance system comprising: an input device; a processor connected to the input device; and a display device connected to the processor; the processor is programmed to receive, via the input device an input of a selectable result parameter, to be optimized, of the working result for an operation to be carried out, to calculate an optimized operating parameter on the basis of the input, and to output, on the display device, at least one expected value, associated with the optimized operating parameter, for the working result of the machine for the operation.