"""Simple module with a single class.

Expected symbols:
- 1 CLASS symbol (Calculator)
- 3 METHOD symbols (add, subtract, multiply)
"""


class Calculator:
    """A simple calculator class."""

    def add(self, a: int, b: int) -> int:
        """Add two numbers."""
        return a + b

    def subtract(self, a: int, b: int) -> int:
        """Subtract b from a."""
        return a - b

    def multiply(self, a: int, b: int) -> int:
        """Multiply two numbers."""
        return a * b
