def METHOD_NAME(self):
    with decimal.localcontext() as ctx:
        ctx.prec = 20
        # Note: All the instances are actually floats, so larger prec.
        numbers = list(map(Decimal, [
            0.8462362724718449, 0.7053497034927213, 0.18865925698056718,
            0.4231422803809822, 0.1454769973533604, 0.11586558849935513,
            0.04047872493132432, 0.09511048123106225, 0.4932086961083296,
            0.12377443905156471]))
        exp = number.infer_quantum_from_list(numbers)
        self.assertEqual(-21, exp)