Question
Mrs Shiyun had some chocolate bars. She bought another 40 chocolate bars. She gave 70 chocolate bars each to her 7 children. In the end, she had 231 chocolate bars left. How many chocolate bars did Mrs Shiyun have at first?
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Mrs Shiyun had some chocolate bars. She bought another 40 chocolate bars. She gave 70 chocolate bars each to her 7 children. In the end, she had 231 chocolate bars left. How many chocolate bars did Mrs Shiyun have at first?