import gradio as gr
from transformers import pipeline

calculator = pipeline('text2text-generation', model='el-filatova/mbart-gsm8k')

def predict(text):
    return calculator(text)[0]['generated_text']

iface = gr.Interface(fn=predict, inputs=[gr.Textbox(value="I have two apples and four oranges. How many fruits do I have?")], outputs="text")
iface.launch(share=True)