Hahaha this is old school type of measurements … if you ask the senior2 construction uncle or hardware bosses .. they using this system measurement

1 Ela = 1 yard = 3 feet
1 ela = approximately 1 forklift bucket or 12 nos wheel barrow capacity
We can assume 1 ela is equivalent to 3ft x 3ft x 3ft
Total : 27 cubic feet

Cheers mate