The result of input values are shown in the formula wizard already. In the next step we should also show the result of sub-expressions.
@Ben: One for you.
Benjamin Ni committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=f82d89f35207fc1cfc00ad5cd914b74c55c3e3d2 tdf#92546 show results for sub-expressions in formula wizard It will be available in 5.1.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.