Marks (out of 100) of four students in Hindi, English and Mathematics are given in the following table.
Study the table carefully and answer the question that follows.
| Students/Subjects | Hindi | English | Mathematics |
| Mukesh | 75 | 80 | 95 |
| Shivam | 80 | 75 | 90 |
| Soumya | 70 | 65 | 85 |
| Shilpee | 80 | 70 | 81 |
What is the overall percentage marks obtained by Shilpee in the given three subjects?