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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 get_number_unit(number):
 """get the unit of number"""

    n = str(float(number))
    mult, submult = n.split('.')
    if float(submult) != 0:
        unit = '0.' + (len(submult)-1)*'0' + '1'
        return float(unit)
    else:
        return float(1)