An item is made from lead blanks in a lathe shop. Each blank suffices for 1 item. Lead shavings accumulated from making 6 items can be melted and made into a blank.
How many items can be made from 36 blanks?

From 36 blanks, 36 items are made. The lead shavings are enough to make 6 blanks, which make 6 more items. But don't stop here. The new shavings are good for 1 more item. Total:  43


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