BEGIN {
	FS = OFS = "	";
}

{
	$5 = ((1000 * $3) / $2);
	print;
}

USSR	8649	275	Asia	31.7956
Canada	3852	25	North America	6.49013
China	3705	1032	Asia	278.543
USA	3615	237	North America	65.5602
Brazil	3286	134	South America	40.7791
India	1267	746	Asia	588.792
Mexico	762	78	North America	102.362
France	211	55	Europe	260.664
Japan	144	120	Asia	833.333
Germany	96	61	Europe	635.417
England	94	56	Europe	595.745