<prompt> Translate the following text to EnglishUchambuzi wake uliacha maswali fulani bila kujibu lakini ulionyesha punguzo la ufanisi zaidi ya kiwango cha 8a na faida ya mamia ya mamilioni ya dola.  <response>: His analysis left some questions unanswered but pointed to efficient discounts well above the 8a level and to gains on the order of several hundred million dollars. 