def increment (text, inc):
    pos1 = text.find(':')
    pos2 = text.find('€')
    nou_preu = str(round(float(text[pos1+1:pos2]) * (1+inc/100), 2))
    if nou_preu[-3] != '.':
        nou_preu = nou_preu +'0'
    return text[:pos1+1] + ' '+ str(nou_preu)+ text[pos2:]