import numpy as np
from typing import Union
import gradio as gr

def multiply(a: float, b: float) -> float:
    """Multiply two numbers."""
    try:
        return float(a) * float(b)
    except (ValueError, TypeError):
        raise ValueError("Both inputs must be valid numbers")

multiply_interface = gr.Interface(
    fn=multiply,
    inputs=[gr.Number(label="A"), gr.Number(label="B")],
    outputs="number",
    title="Multiplication",
    description="Multiply two numbers"
)