Question: Is there a way to save results to file instead of the console/display?

Is there a way to save results to file instead of the console/display? My expressions got too long and they occupy huge space on screen and scrolling is horrible now. Of course I can hide the content of the display by using ":". However, I do need to use(copy & paste to other applications) the very last output of results(it is very long). Is there a way to specify or redirect the output to file so after a while I just need to open the output file to use that long expression? Thanks a lot!
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