function processField(field, fieldValue, result){
                var fieldValueType = typeof fieldValue;
                if(fieldValueType === 'number'){
                    if(result[field] == undefined){
                        result[field] = 0;
                    }

                    result[field] += fieldValue;
                }
                else if(fieldValueType == 'object'){
                    if(result[field] == undefined){
                        result[field] = {};
                    }

                    for(var objField in fieldValue){
                        processField(objField, fieldValue[objField], result[field]);
                    }
                }
            }

            for(var index in v){
                for(var field in v[index]) {
                    var fieldValue = v[index][field];
                    processField(field, fieldValue, r);
                }
            }