def repeatedString(s, n)
    indexes = []
    (0..s.length-1).each do |index|
       indexes << index if s[index] == 'a' 
    end
    
    return 0 if indexes.empty?
    
    count = 0
    size = s.size
    indexes.each do |index|
        count += ((n - 1 - index) / size) + 1
    end
    
    count
end