Cirno's Math Quiz

Can you outsmart Cirno and pass her math quiz?

Two difficulties, countless questions!

The rules are simple (ordered by priority):

1. If there is a 9 is in the question, Cirno is quite smart and will do the math correctly!
EXAMPLE: 1+9=10

2. If the answer is 9, then the answer is ⑨.
EXAMPLE: 5+4=9

3. Otherwise, subtraction and addition are like the following:
EXAMPLES: 1+1 = 11, 1-2=21