<prompt> Translate the following text to EnglishNusu ya benki hazitoi ada yoyote, tu kuridhika kuwa na akaunti hizi kama chanzo kikubwa kuongezeka kwa fedha nafuu kutumia karibu riba-free.  <response>: Half of the banks charge no fees whatsoever, simply satisfied to have these accounts as a significant growing source of inexpensive money to use almost interest-free. 