将以下句子翻译成英文：Calculator is a tool used for daily mathematical operations.然后将这段文本放在一个 JSON 对象中，字段名为 "original" 和 "translation"。以json形式输出。
user
{
  "original": "Calculator is a tool used for daily mathematical operations.",
  "translation": "Calculator is a tool used for daily mathematical operations."
}
assistant