arithmetical solution

例句：

1. 1. The problem isarithmetical and can be solvedusing basic arithmetic operations.
   这个问题是算术问题，可以通过基本的算术运算来解决。
2. 2. The math teacher explained thearithmetical formula for calculatingthe area of a circle.
   数学老师解释了计算圆面积的算术公式。
3. 3. Arithmetical calculations are essential in financialplanning.
   算术计算在财务规划中至关重要。