Author: sroot

  • How many 1st class stamps to use on heavy letters?

    In our office, we buy Royal Mail stamps in ready to use denominations of “1st Class”, “2nd Class”, “Large 1st Class” and “Large 2nd Class”. However, these are only useful for 100g weight letters. For heavy letters, we can use multiples of these stamps. I noticed I was routinely having to do the calculation in…

  • Google Chrome ” Failed – Network Error.” on downloading files greater than 5MB (ish) – solution for me = Disable QUIC

    For the last few weeks I’ve had trouble downloading from Google Photos files. It only happened on large files; videos & zip files of multiple images. The problem only affected Chrome – the files would download fine using Firefox. For single images the download would work so I decided it must be something related to…

  • Margins and Markups: how to handle multiple discounts/rebates

    Following on from an old blog post about Margins and markups What everyone in business needs to know a reader posted this question in the comments If you’re not sure how to calculate margins, read that first. Hi, how do you do multiple rebates % to give a true value of what the total discount…