How to transform a single table query output in typeorm

Question

id	code	category_id	currency_id	quantity	currency	denomination_id	denomination	symbol
1	FNC-64119	1	1	4000	Naira	1	500	₦
2	FNC-64118	1	1	1000	Naira	1	500	₦
3	FNC-64117	1	1	10	Naira	2	100	₦
4	FNC-64116	1	2	900	Dollar	3	5	$
5	FNC-64115	1	2	60	Dollar	4	10	$
6	FNC-64114	2	2	800	Dollar	5	100	$
7	FNC-64113	2	2	75	Dollar	6	1	$

I have the above table in PostgreSQL database table, I want to query the table and transform the output into the below JSON format using nestjs typescript

[
  {
    "currency_id": 1,
    "currency": "Naira",
    "symbol": "₦",
    "total": ? /*SUM(amount)*/,
    "denminations": [
      {
        "denomination_id": 1,
        "denomination": 500,
        "quantity": 4000,
        "amount": ? /*amount: (denomination * quantity)*/
      },
      {
        "denomination_id": 1,
        "denimination": 500,
        "quantity": 1000,
        "amount": ? /*amount: (denomination * quantity)*/
      }
    ]
  },
  {
    "currency_id": 2,
    "currency": "Dollar",
    "symbol": "$",
    "total": ? /*SUM(amount)*/,
    "denminations": [
      {
        "denomination_id": 3,
        "denomination": 5,
        "quantity": 900,
        "amount": ? /*amount: (denomination * quantity)*/
      },
      {
        "denomination_id": 4,
        "denomination": 10,
        "quantity": 60,
        "amount": 0
      }
    ]
  }
]

My code

 const qb = await getRepository(FaultyNotesRequestEntity)
  .createQueryBuilder("faulty_notes_request")
  .select("(faulty_notes_request.quantity*faulty_notes_request.denomination)", "amount")
  .addSelect("faulty_notes_request.denomination", "denomination")
  .addSelect("faulty_notes_request.denomination_id", "denomination_id")
  .addSelect('faulty_notes_request.quantity', 'quantity')
  .groupBy("faulty_notes_request.denomination,faulty_notes_request.denomination_id, faulty_notes_request.quantity")

const notes = await qb.getRawMany();

const qb2 = await getRepository(FaultyNotesRequestEntity)
.createQueryBuilder('faulty_notes_request')
.select('faulty_notes_request.currency_id', 'currency_id')
.addSelect('faulty_notes_request.symbol', 'symbol')
.addSelect(`SUM(${notes.map(x => x.amount)})`, 'total')
.addSelect('faulty_notes_request.currency', 'currency')
.groupBy("faulty_notes_request.currency_id,faulty_notes_request.symbol, faulty_notes_request.currency, faulty_notes_request.id")

const notes2 = await qb2.getMany();

let resp = notes2.map(x => {
  pool.currency_id = x.currency_id,
  pool.currency = x.currency,
  pool.symbol = x.symbol,
  pool.total = x./*total - does not show-up here*/
})

This is where I get stuck. Any help will be appreciated