Looking to add up by last stop

Hello Folks,

I am trying to add 50 miles into current miles based on last Stop_Number.
if anyone know please help me out.
I also mention expected answer in color.

Thanks

Try this, copied down:

Formula:

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Thank you.

And the solution? How was that for you?

You're welcome. Thanks for the rep.

The biggest issue I am facing right now is to add another stop location (LATITIDE AND LONGTITUDE) So that I can find total route distance.
I have latitude and longitude in data for all location. I check one video where I can convert distance from Lat and long but how can I add Lat and long after last stop.