This is the 9172nd most frequent Russian word.
сеулом
"Сеулом" is the instrumental case of "Сеул" (Seoul), meaning "with Seoul" or "by Seoul" in Russian.
Here 'сеулом' (Seoul) is used as a proper noun representing the city, indicating its location in relation to the action.
Мы проехали через город с Сеулом впереди.
We drove through the city with Seoul ahead.
In this humorous context, 'сеулом' is part of a sentence structure used for comparison, though typically redundancy like this is avoided.
Он говорит о своем опыте работы в Сеуле, сравнивая его с Сеулом.
He talks about his work experience in Seoul, comparing it with Seoul.
In this example, 'сеулом' is used to denote Seoul as the subject or context of inspiration for the painting.