There's nothing special about Washington, DC, so nobody would ever phrase a question this way.
But, DC is at (approximately) 39N 77W, so 80 degrees south and 107 degrees west of DC would be 41S, 194W. Oops, the maximum longitude is 180, so "194W" would be 14 degrees west of 180E, which would be 166E.
So, 41S, 166E. These coordinates are in the Tasman Sea, about 280 miles northwest of Canterbury, New Zealand.
atlantic ocean
Sndn
Miami..
Honolulu
It's off the coast of the South Pole.
There is no city located directly at 30 degrees South and 50 Degrees West. The closest city is the city of Tramandai, Brazil.
Washington, DC
Brazilla Brazil
polar bears(:
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atlantic ocean
Sndn
It is important to know how to travel with latitude and longitude. 26 degrees south, and 58 degrees west lands in the country of Argentina. The closest city to this point is Formosa.
Mexico City
The city located at 6 degrees south latitude and 106 degrees west longitude is Lima, the capital of Peru.
The coordinates 20 degrees south and 60 degrees west point to the continent of South America. This location is in eastern Brazil, near the city of Salvador.
The location of 34 degrees south and 58 degrees west is Buenos Aires, Argetina.