If the question was:
If the Atlantic Ocean is 106,400,000 km^2, is completely covered with natural gas rigs, and there are 2 natural gas rigs every 50 m^2, how many natural gas rigs are there in the Atlantic Ocean?
The the answer would be:
106400000 * 2 / 50 = 4256000
4,256,000 natural gas rigs.