Spending in June 2005
The club is reviewing who participated in the June 2005 reading marathon. For every member who borrowed books that month, compute their total spending (daily_fee * days).
Expected output sample
This is what a correct answer looks like — its row count is its own, it doesn't have to match the schema tables.
| costs | member_name |
|---|---|
| 30.00 | Edward Whitlock |
| 8.00 | Margaret Whitlock |
| 20.00 | Oliver Whitlock |
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