Hint:
1. Arrange the column numbers in m-cm.
2. cm. column; 6 cannot be subtracted from 5, thus add 4 the param Mitra digit of 6 to 5.
3. Write sum = 9 at the answer place and mark ekadhk sign on 4 the predissociator digit.
4. 4 = 5, cannot be subtracted from 3, thus add 5 the param Mitra digit to 3, the pre-dissociator digit.
5. Write sum = 8 below and mark the sign of ekadhik on the pre-dissociator.
6. Write 7 – 5 = 1 below.
7. 7 cannot be subtracted from 6,
So adding 6 + 3 = 9 write below and mark the sign of ekadhik on the pre-disjunction 3.
8. Write 4 – 3 = 0 below.
9. All the next operations will be done in the same way.
∴ Answer = 9 km 91 m 89 cm.