Question: Dollar increase of 3M on the latest trading day（based on the latest closing price and the previous closing price）
Answer (English): Required Content: The latest price change in dollars of 3M
Accuracy Requirements: Only rounding errors are allowed
Date: 2025/8/14
Reference data: {"MMM___N":{"RT_TIME":"160000","RT_DATE":"20250813","RT_CHG":"2.35"}}