    ratio = Decimal(str(output['values']['B'])) / Decimal(str(output['values']['A']))
    check('程序算出B/A=1.5而非3', ratio == Decimal('1.5'))
    result = {'read_values': output['values'], 'calculated_ratio': str(ratio), 'claim_verdict': 'incorrect', 'original_claim': output['claim']}
