A full gross number I noticed in my Steam inventory the following card: >  What is a full gross number? Google results just show me the gross bill amount/gross weight etc. terms, but not the number.

According to wikipedia),

> In English and related languages several terms involving the word gross relate to numbers involving multiples of exponents of 12 (dozen).
>
> A Gross refers to a collection of 144 items (a dozen dozen items).
>
> A Great Gross refers to a collection of 1728 items (a dozen dozen dozen items).
>
> A Small Gross refers to a collection of 120 items.

Hope this helps you.