1. 777 = 100x

2. 999 = 50x

3. 555 = 30x

4. 111 = 20x

5. 000 = 10x

6. 123 = 5x

7. 77 = 5x

8. 77 = 5x

9. 77 = 4x

10. 00 = 3x

11. 00 = 3x

12. 7 = 2x

13. 7 = 2x

14. 7 = 2x

15. 0 = 1.5x