Sounds terrible. But I encourage you to try it, it is a good exercise in understanding the material better. Maybe try a smaller scale first

It’s a mistake in the label template. In variable label printing it is common to use the same template for all products, i would imagine that the weight is probably stored as a floating-point number in the database and it is required to round the number to fit it on the template. It probably looked fine for 99% of labels being printed, especially in the European market where we use the metre SI… but in this case it did not work out, classic programmers nightmare to handle different locales especially for a company that probably centralize all label printing for all Ikea stores in the world.