Alternatively, you can just type in how many units you intend to haul and leave Cargo Hold blank. Volume per Unit is also optional if you manually enter Units Hauled.
Note: If you have changed any values, sorting may not work properly until the data has been saved.
* Takes into account station drop-off round trip.
† Varies by ship speed & mining/station locations.
‡ Rounded up to nearest minute.
** Keep in mind strip miners have a 180s cycle. Divide their yield by 3 to get m³/60s.
And don't forget to include your drones!