How many rice grains would it take to fill a 1190 square feet room?

At first I disovered - 1 kg bag of rice contains 50,000 grains.

Then I decided to count the number of rice grains in a square inch -> 42 grains

Converted 1190 square feet into square inches -> 171360 inē

42*171360 = 7 197 120 grains of rice to cover 1190 square feet room.

Any input be helpful