Memly original planning example, November 2026. These files contain no learner records and no measured product results. calculate.py uses Python 3 standard library only; run python3 calculate.py. The four follow-up offsets (1, 3, 7, 14 days after first introduction), 60 seconds of initial work per new card, and 20 seconds per later attempt are invented fixed assumptions. They are not Anki/FSRS/Memly schedules. Every attempt succeeds; there are no missed days, backlog, same-day extra attempts, card-writing time or reviews beyond the fourth follow-up. Use the 28-day CSV to inspect the arithmetic, not to predict your workload. In worksheet.csv, record actual elapsed work, including checking answers. Card-creation time is tracked separately; do not spend it twice in a budget. No fixed new-card quota is prescribed.