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:
| Autonomous Community | Hydroelectric power | Wind power | Solar power | Biomass power | Solid waste power | Total Renewable Generation | Total Electricity Demand | % Renewable of Total Electricity Demand |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Castile and León | 6960.0 | 3840.0 | 14.0 | 274.0 | 87.0 | 11175.0 | 15793.0 | 70.8% |
| Galicia | 7561.0 | 5970.0 | 1.0 | 242.0 | 317.0 | 14091.0 | 20279.0 | 69.5% |
| La Rioja | 124.0 | 897.0 | 1.0 | 3.0 | 2.0 | 1027.0 | 1860.0 | 55.2% |
| Aragón | 3073.0 | 3342.0 | 1.0 | 63.0 | 8.0 | 6487.0 | 11885.0 | 54.6% |
| Navarre | 379.0 | 2248.0 | 28.0 | 269.0 | 0.0 | 2924.0 | 5401.0 | 54.1% |
| Extremadura | 2244.0 | 0.0 | 1.0 | 0.0 | 0.0 | 2245.0 | 5076.0 | 44.2% |
| Castile-La Mancha | 710.0 | 3935.0 | 8.0 | 99.0 | 34.0 | 4786.0 | 12686.0 | 37.7% |
| Asturias | 1680.0 | 357.0 | 0.0 | 221.0 | 400.0 | 2658.0 | 12391.0 | 21.5% |
| Cantabria | 875.0 | 0.0 | 0.0 | 11.0 | 41.0 | 927.0 | 5693.0 | 16.3% |
| Catalonia | 3223.0 | 301.0 | 7.0 | 77.0 | 241.0 | 3849.0 | 48498.0 | 7.9% |
| Andalusia | 946.0 | 1042.0 | 5.0 | 728.0 | 0.0 | 2721.0 | 40737.0 | 6.7% |
| Basque Country | 336.0 | 339.0 | 3.0 | 55.0 | 326.0 | 1059.0 | 20934.0 | 5.1% |
| Valencia | 1041.0 | 266.0 | 13.0 | 55.0 | 0.0 | 1375.0 | 27668.0 | 5.0% |
| Canary Islands | 0.0 | 288.0 | 0.0 | 0.0 | 0.0 | 288.0 | 9372.0 | 3.1% |
| Balearic Islands | 0.0 | 5.0 | 0.0 | 0.0 | 133.0 | 138.0 | 6235.0 | 2.2% |
| Murcia | 65.0 | 93.0 | 6.0 | 12.0 | 0.0 | 176.0 | 8334.0 | 2.1% |
| Madrid | 83.0 | 0.0 | 8.0 | 58.0 | 330.0 | 479.0 | 30598.0 | 1.6% |
| Ceuta & Melilla | 0.0 | 0.0 | 0.0 | 0.0 | 2.0 | 2.0 | 391.0 | 0.5% |
Question:
What is the lowest numbered hydroelectric power when the renewable electricity demand is 21.5%?
Answer:
1680.0