Texts exceed a Label or Textbox

Hi Community,
I am creating a simple calculator app, i want to make the numbers appear from right to left in a Label or TextBox, and the numbers automatically scroll to left continueously when they fully filled and exceed the Label. As a result i can see the last number without scrolling the Label or Textbox.
How should i set the block? Here is my example :
Thanks anyone can help !

Right align the label ?

Thank You,
In fact, i want the result like that :


Thanks Anke,
I can do the result with your method by using mobile's keyboard, but i can't do it with my number button pad I created on my calculator.
Is there any method?