Once clean (and out of the buffet), ask for the clipboard and start doing the arithmetic of modern aviation. After you’ve added together all the individual leg segments to the departure time, you should be presented with an expected arrival time. Once complete, you’re once again free to relax and enjoy the tranquility of the modern flight deck.
OR just add the flight time to the take off time. But that would be too much common sense at this stage?
After the takeoff has been completed, it’s not unusual to hear the DEFO ask for flaps up during a turn while accelerating through the clean speed. As a result, expect either strong buffeting or a strong reprimand. The latter is more enjoyable, rest assured.
Don't you mean Flaps 5 Speed?
Aviation Maths, after all the hard study at Uni to get a Maths degree, is simply adding, subtracting, and multiplying. Sorry to waste your time!