Every time you gather, you permanently, cumulatively multiply the wood value by the multiplier. For example, if the multiplier were always 2, then your first gather would yield 2, your next gather would yield 4, your third gather would yield 8, etc.
But that won’t get you to a value of 7 (which is prime), so either your multiplier is not an integer or you have some other script modifying the wood value.
Please use code tags .