def calc_income_by_time_in_euro_with_sales_tax(worked_time_in_minutes, hourly_wage_in_euro):
    sales_tax_percent = 0.19
    brutto_income_in_euro = worked_time_in_minutes * (hourly_wage_in_euro / 60)
    sales_tax = sales_tax_percent * brutto_income_in_euro
    netto_income_in_euro = brutto_income_in_euro - sales_tax
    return netto_income_in_euro, sales_tax


def calc_income_by_time_in_euro_without_sales_tax(worked_time_in_minutes, hourly_wage_in_euro):
    return worked_time_in_minutes * (hourly_wage_in_euro / 60)