Interior dimension of Ikea 20 cm drawer

Can someone tell me what the drawer width is for the 20 cm wide pull-out cabinet? The product description states 19.6 cm total width. However, I am interested in the actual usable width. Unfortunately, I can't find any information on this, and the nearest Ikea is almost 180 km away, so it's too far to quickly go and measure. I thank you in advance for the answer. Anita

What would also be interesting:
Is it possible to mount the 2 drawers individually at different heights?
In the picture, it does not seem so.
If not, what is the distance between the drawers?

You mean the base cabinet with a height of 80cm and a drawer with two levels, right? So, that piece for bottles, etc.? The height of the levels is, if I’m not mistaken, fixed.

If it’s the cabinet I have in mind, I can measure it – I installed it in the fitted kitchen of an apartment; on Tuesday I will be on-site for a handover preparation.

Yes, exactly this pull-out cabinet is what I mean. I measured and converted the Ikea pictures. I came to 10 cm of space. But I don't fully trust my research. ;-)