Unlike English, in Japanese the 'letters' or 'symbols' are not one individual letter. The English letter 'S' us would be paired with a vowel ('a', 'e', 'i', 'o' or 'u' )
5 stars of the Southern Cross
aS to 5A
5+5+5-(5 to the power of 0)-(5 to the power of 0)
100 or less