How to group an array for the same user and calculate subtotals and totals?

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青春惊慌失措
青春惊慌失措 2021-02-10 13:01

I\'m developing an application in ReactJS.

I have the array:

[
  {
    "id": 1,
    "period": {
      "id": 1,
      "na         


        
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