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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unhumanize_class(my_classes):
 """Return class as interval without formatting."""

    result = []
    interval = my_classes[-1] - my_classes[-2]
    min_value = 0
    for max_value in my_classes:
        result.append((format_decimal(interval, min_value),
                       format_decimal(interval, max_value)))
        min_value = max_value
    return result