How to Sum every rows data in dinamic field input Laravel Livewire

#1

I have input with dinamic field so i can add more colomn and remove it . in this input i have colomn total_price , on price i need price * qty . but i dont know how do this on multiple input . i just can do this on single input . my form and livewire like this :

  1. form

       <form>
     <button wire:click.prevent="add({{$i}})">
     Add 
     </button>
             
     <input type="hidden" wire:model="newid.0">
             
     <input wire:model="nama_barang.0" type="text" />
     <input wire:model="qtt.0" type="text" />
     <input wire:model="price.0" type="text" />
     <input wire:model="qty.0" type="text" /> 
     <input wire:model="total_price" type="text" /> // here the problem

     @foreach($inputs as $key => $value)
     <input wire:model="nama_barang.{{ $value }}" type="text" />
     <input wire:model="qtt.{{ $value }}" type="text" />
     <input wire:model="price.{{ $value }}" type="text" />
     <input wire:model="qty.{{ $value }}" type="text" /> 
     <input wire:model="total_price" type="text" /> // on here i get the problem

     @endforeach

     <button wire:click.prevent="store()">Submit</button>
 </form>

and this is my livewire

public $belanja_id, $nama_barang, $qtt,$newid;
public $updateMode = false;
public $inputs = [];
public $i = 1;
public $total_price ;
public $price= [] ;
public $qty = [];

public function add($i)
{
    $i = $i + 1;
    $this->i = $i;
    array_push($this->inputs ,$i);
}

public function mount($id)
{
   $belanja = $this->belanja = Belanja::findOrFail($id);
   $this->newid = $belanja->id;
   $this->k_uraian = $belanja->uraian;

} 

public function remove($i)
{
    unset($this->inputs[$i]);
}

public function render()
{
    $this->total_price =array_sum($this->price) * array_sum($this->qty)   ; // i try with this but only get 1 rows , can someone help ?
    
    return view('livewire.input-belanja-lw');
}

and you can see my form on this picture (better u see this picture so u can know my problem) , i cant add sum total_price . so can someone help about this ?

my references is from this site site