app.py

import gradio as gr

with gr.Blocks() as myApp:
    with gr.Row():
        with gr.Column(scale=1):
            a = gr.Textbox(label='ตัวเลข A:')
            b = gr.Textbox(label='ตัวเลข B:')
            btn = gr.Button(value='คำนวณ')
        with gr.Column(scale=1):
            out = gr.Textbox(label='ผลลัพธ์')

myApp.launch()