要计算还需要多少钱才能完成抽奖活动，步骤如下： 1. **总目标次数**：600次 2. **已集次数**：290次 3. **剩余次数**：600 - 290 = **310次** 4. **每次费用**：1元（即100点券） 5. **总需费用**：310次 × 1元/次 = **310元** **结论**：还需 **310元**（即31000点券）即可完成抽奖目标。
Hello I’m Jenny Kurto author of Letter town blog. This is my personal space which is like to share others. And i’m living New York city working and blogging.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry.
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