Hi!
Check forum posts on the same matter:
https://www.wix.com/corvid/forum/community-discussion/how-to-round-a-number
https://www.wix.com/corvid/forum/community-discussion/how-to-round-numbers
https://www.wix.com/corvid/forum/community-discussion/rounding-decimals-and-add-a-thousands-comma-separator
https://www.wix.com/corvid/forum/community-discussion/format-numbers-like-1-000-to-1k-and-1-000-000-to-1m
and you can always change your database fields to number :
https://support.wix.com/en/article/changing-a-database-collection-field-type