Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Member countries | Population | Area (km²) | GDP (billion US$) | GDP per capita (US$) |
| --- | --- | --- | --- | --- |
| Denmark | 5,021,861 | 43,094 | 70.032 | $59,928 |
| Ireland | 3,073,200 | 70,273 | 21.103 | $39,638 |
| United Kingdom | 56,210,000 | 244,820 | 675.941 | $36,728 |
| Accession countries | 64,305,061 | 358,187 | 767.076 | 11,929 |
| Existing members (1973) | 192,457,106 | 1,299,536 | 2,381,396 | 12,374 |
| EC9 (1973) | 256,762,167 (+33.41%) | 1,657,723 (+25.44%) | 3,148.472 (+32.21%) | 12,262 (−0.91%) |
Question:
What is the GDP of the nation with 56,210,000 people?
Answer:
$36,728