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Calculation when multiple records can be selected
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I am working a field trip application to organize field trips for my school. Airtable is definitely game changer for this!
I met a problem on my budget tab:
- For each grade I have a total budget
I can select the trip record from another TAB on a column named TRIPS for each grade
The TRIPS cell can allow multiple records from the tab TRIP (if my grade 1 are doing 3 trips, we can select the three trips)
I pull the total cost from all those trips.
I need to show the remaining budget for each grade by a simple operation: budget - (total costs of all trips)
But the problem is that the total costs for each trip are all in one cell. What should I do?
