def impostos (text, iva):
    trobat = False
    for i in range(len(text)):
        trobat = text[i].isdigit()
        if trobat:
            pos1 = i
            break
    pos2 = text.find('€')
    nou_preu = str(round(float(text[pos1:pos2]) * (1+iva/100), 2))
    if nou_preu[-3] != '.':
        nou_preu = nou_preu +'0'
    return text[:pos1] + nou_preu + text[pos2:]