Question: User: 58.9 plus 6.04
1. **State the problem:** We need to find the sum of $58.9$ and $6.04$.
2. **Formula used:** Addition of two decimal numbers is done by aligning the decimal points and adding digit by digit.
3. **Perform the addition:**
$$
58.9 + 6.04 = 58.90 + 6.04
$$
4. **Add the numbers:**
$$
58.90 + 6.04 = 64.94
$$
5. **Explanation:** We added $58.90$ and $6.04$ by aligning the decimal points and adding each column starting from the right.
**Final answer:** $64.94$