[{_id:1,"cd_order":"7650614875"}]

db.collection.aggregate([{"$match":{"cd_order":"7650614875"}},{$set:{inc:{"$range":[0,51,1]}}},{"$unwind":"$inc"},{$set:{cd_order:{$toString:{$add:[{"$toLong":"$cd_order"},"$inc"]}},"inc":"$$REMOVE",_id:"$$REMOVE"}},{"$merge":{"into":"collection","on":"cd_order","whenMatched":"merge","whenNotMatched":"insert"}}])