
Steps:
1. 73 + 70 = 70 + 30 + 43
= 100 + 43 = 143
Hence mark an Ekadhika dot on 4 before 70.
2. Rest 42 + 54 + 89 = 89 + 11 + 43 + 43
= 100 + 86 = 186
Hence mark on Ekadhika dot on 2 before 89.
3. Rest 86 + 75 = 86 + 41 + 61
= 100 + 6 = 161
Hence mark on Ekadhika dot on 0 before 75.
4. Rest 61 + 01 = 62
Hence 62 at answer’s place
5. The remaining addition process will be completed accordingly.