title: Adding series in a table and breaking again when the value reaches 230 to start again
body: <p>I'm working on a school project and maybe one of you can help me with the following excel problem. I tried to google a little bit but I can't properly formulate my question.</p>
  <p>I have a table in excel that looks like this:</p>
  <p><a href="https://i.stack.imgur.com/9snCC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9snCC.png" alt="A snippet of excel table" /></a></p>
  <p>I'd like to be able to sum contents in U column until the result reaches 235 and then start again from 0. Column B represents different days of the week. When a day changes, the calculations also should start from 0. Can anyone help?</p>
  <p>Thanks a lot</p>