How to format dependable, readonly(calculated) fields?

Forms\Components\TextInput::make('amount')
    ->numeric()
    ->reactive()
    ->afterStateUpdated(function (callable $set, callable $get, $state) {
        $this->calculate($set, $get);
    })
    ->required(),
Forms\Components\TextInput::make('price')
    ->extraInputAttributes(['readonly' => true]),
Forms\Components\TextInput::make('sum')
    ->extraInputAttributes(['readonly' => true]),