Design an 8-slice free-spins wheel with balanced probabilities.
A small tool to design a free-spins prize wheel: you set the average prize, the value of each spin and the minimum spins, and it returns the probability of each slice so the expected prize matches your target.
The wheel shows the possible prize slices; each one is a number of free spins and its probability.
| # | Prize description | Calculation | Free spins | Probability |
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