Well, according to[1] elsewhere in this thread, we can use 130 tons as an approximation for lift capacity. So for 200000 tons, that would require 1500 ICMBs connected to the ship and launched at the same time.

Probably more expensive than most other solutions, and I doubt that the Evergiven will be in a good condition afterwards.

[1] https://news.ycombinator.com/item?id=26586189