If staff readings taken on B and C by a tacheometer placed at A are
| Staff | Distance (m) | Stadia Reading | ||
| B | 120 | 1.23 | 1.81 | 2.39 |
| C | 200 | 0.95 | 1.93 | 2.91 |
Calculate the sum of multiplying and additive constants of the tacheometer(in integer).
Enter numerical value using the virtual keypad. Round off where necessary.