Here is another blackjack problem from the same source as the earlier one...

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A gambler walks into an Australian casino (no hole card, no surrender option) and plays one hand in one box, on his own.

He never bets less than $25 or more than $100.

Every play he makes is in units of $25, ie he might bet $50 but not $40. Should there be a split, full or partial double and/or an insurance bet they would all be in $25 units or multiples.

He walked away after his one bet and rang a friend who knew exactly how he stakes his bets and advised him of the monetary result (how much he won or lost) of the hand. From just that information the friend worked out the number of cards used in the hand.

Question: What was the monetary result of the hand and how many cards were used?

Note: There is just one correct answer that only allows for one specific number of cards.