title: kotlin android rooom how to calculate data's from column with edit text?
body: <p>As in the topic, how to multiplicate data from column with edit text in AdapterList?
  e.g.</p>
  <pre><code>class AdapterList (context: Context, val resource: Int, val objects: List&lt;Opryski&gt;) :
  ArrayAdapter&lt;Opryski&gt;(context, resource, objects){
  override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
  val inflater = LayoutInflater.from(context)
  val customView = inflater.inflate(resource, parent, false)
  val area= customView.findViewById&lt;EditText&gt;(R.id.editTextSize)
  val dose= customView.findViewById&lt;TextView&gt;(R.id.id_dose)
  val name= customView.findViewById&lt;TextView&gt;(R.id.id_nazme)
  val what= customView.findViewById&lt;TextView&gt;(R.id.id_what)
  val when= customView.findViewById&lt;TextView&gt;(R.id.id_when)
  val profilaktyka = customView.findViewById&lt;TextView&gt;(R.id.id_profilaktyka)
  
  val item = objects.getOrNull(position)
  if(item!=null)
  {
      name.text = item.name
      dose.text = item.dose.toString() * area //&lt;--- I want to multiplicate this//
      what.text = item.what
      when.text = item.when
      profilaktyka.text = item.profilaktyka
  }
  </code></pre>
  <p>return customView
  }</p>