Guys how to calculate grade for English Second Language? Any idea??

[Cool_Guy5012]

Paper 2 (Reading and Writing) : Maximum Mark: 90 Minimum Mark for A: 67
Paper 2 counts 70%
Paper 4 (Listening Comprehension): Maximum Mark:36 Minimum Mark for A: 31
Paper 4 counts 30%
Paper 5(Oral):Maximum Mark 30 Minimum Mark for 1: 26 (no grading but in numbers 1,3,5)
Don't know how much it counts

In total Maximum Total Mark is 200 Minimum Mark for A*: 172

I want to estimate that how much I will get...as my paper 2 was bad so I want to see is there any chance of getting A*

Please help me