To divide $23.10 by 2, you can follow these steps:
1. **Step 1:** Write down the division problem: $23.10 ÷ 2
2. **Step 2:** Divide the dollars part first: $23 ÷ 2 = $11.50
3. **Step 3:** Divide the cents part: $0.10 ÷ 2 = $0.05
4. **Step 4:** Put the results together: $11.50 + $0.05 = $11.55
Therefore, $23.10 divided by 2 equals $11.55.