Usage
{{str rightc|<string>|<count>|<result if empty>}}
Returns a substring of length <count> characters from the right-side end of the string.
Examples
{{str rightc|Lorem ipsum dolor sit amet|7}}→ it amet{{str rightc|Lorem ipsum dolor sit amet|1}}→ t{{str rightc|Lorem ipsum dolor sit amet|0}}→{{str rightc|Lorem ipsum dolor sit amet|99}}→ Lorem ipsum dolor sit amet
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