1. **State the problem:** We want to divide 20 by 12 and find the highest number with exactly 2 decimal places. 2. **Perform the division:** Calculate $$\frac{20}{12}$$. 3. **Calculate the exact decimal:** $$\frac{20}{12} = 1.6666\ldots$$ (repeating 6). 4. **Find the highest number with exactly 2 decimals:** This means truncating (cutting off) after 2 decimal places without rounding up. 5. **Truncate the decimal:** The number becomes $$1.66$$. 6. **Calculate the cut off decimals:** The difference between the exact value and truncated value is $$1.6666\ldots - 1.66 = 0.0066\ldots$$ 7. **Express the cut off decimals as a sum:** Since the decimal repeats, the cut off decimals sum to approximately $$0.0066$$. **Final answers:** - Highest number with exactly 2 decimals: $$1.66$$ - Sum of cut off decimals: approximately $$0.0066$$