<p>计算由<img src="https://learnfile.20230611.cn/learnAppQuestion/94/34/94347d3c810239a9c8fb85121677e60d.jpg" style="width: 100%;height: auto;">与<img src="https://learnfile.20230611.cn/learnAppQuestion/27/25/2725b1b1f5549b22e0b27de7746746f2.jpg" style="