I have purchase requests coming to me from a smartsheet form and it is capturing costs of each request. I have a "created on" column open in the sheet. I would like to sum costs of all requests per quarter. This information is being captured in a sight and broken down into quarters and Year to Date on the sight for 2017. A new widget will be added for 2018 but I am operating on the same sheet. So, I would like to be able to differentiate in the smartsheet 2017 and 2018 costs as well. Can someone help with the formula I would need to do this?