Is it possible in QGIS print composer to include a numeric scale in an html box?

For work I always have to create a table with my name, project name, date etc. into my map layouts. I also need to include the scale like "1:150000" in that table.

So far I am solving that by including an html table with the html box function of the print composer. Is there a way to automatically include the right scale? So far I only managed to automatically include the date by using a little javascript. Maybe something similar is also possible for the scale?