Please follow the following information:
All defenses cost 10 rupees to upgrade *, 50 rupees to upgrade **, 200 rupees to upgrade ***, and 500 rupees to upgrade ****. Each * increases the same defense value.
The mask of the Ekai team has a defense value of 1 when unenhanced, and a defense value of 13 when upgrade to ****
Please extract the key information and list the process to answer:How many rupees does it cost to upgrade the mask of the Ekai team to **? How much will the defense value change to? I want the entire output in JSON format.
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