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There is, but they experiment with it pretty often.
I think the formula is in the FAQ at the bottom of the page, if you want to see it.
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Ok. I'll check
reply
pull down to refresh
There is, but they experiment with it pretty often.
I think the formula is in the FAQ at the bottom of the page, if you want to see it.
Ok. I'll check
This means there is no fixed formula for it.