1 The flow chart shows an algorithm for which the input is a three-digit positive integer.
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1. Trace through the algorithm using the input \(A = 614\) to show that the output is 297 . Write down the values of \(A , B , C\) and \(D\) in each pass through the algorithm.
2. What is the output when \(A = 616\) ?
3. Explain why the counter \(C\) is needed.