arithmetically

例句：

1. 1. We need to calculate the area of the circle accurately.
   我们需要准确地计算圆的面积。
2. 2. The problem can be solved algebraically.
   这个问题可以用代数方法解决。
3. 3. Arithmetically, we can divide the number by 2 and get the result.
   从数学上讲，我们可以将这个数除以2得到结果。