在Ansible中进行算术运算可以使用Jinja2模板的表达式语法。下面是一个包含代码示例的解决方法：

1. 创建一个Ansible playbook文件，比如arithmetic_operations.yml。

2. 在playbook文件中定义一个变量，比如number1和number2，并赋予它们相应的值。

---
- name: Arithmetic Operations
  hosts: localhost
  gather_facts: false
  vars:
    number1: 10
    number2: 5
  tasks:
    - name: Print Addition
      debug:
        msg: "{{ number1 + number2 }}"

    - name: Print Subtraction
      debug:
        msg: "{{ number1 - number2 }}"

    - name: Print Multiplication
      debug:
        msg: "{{ number1 * number2 }}"

    - name: Print Division
      debug:
        msg: "{{ number1 / number2 }}"

3. 运行playbook文件。

ansible-playbook arithmetic_operations.yml

输出结果将显示四种算术运算的结果：

PLAY [Arithmetic Operations] ***************************************************

TASK [Print Addition] **********************************************************
ok: [localhost] => {
    "msg": "15"
}

TASK [Print Subtraction] *******************************************************
ok: [localhost] => {
    "msg": "5"
}

TASK [Print Multiplication] ****************************************************
ok: [localhost] => {
    "msg": "50"
}

TASK [Print Division] **********************************************************
ok: [localhost] => {
    "msg": "2.0"
}

PLAY RECAP *********************************************************************
localhost                  : ok=4    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

这样你就可以在Ansible中使用算术运算了。