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:
| Municipality | Population | Inhabitants per km² | Area (in km²) | Markatal | Island | Region |
| --- | --- | --- | --- | --- | --- | --- |
| Tórshavnar kommuna | 19.339 | 112.0 | 173.0 | 327.0 | Streymoy | Tórshavn |
| Klaksvík | 4.886 | 57.0 | 86.0 | 144.0 | Streymoy | Klaksvík |
| Runavík | 3.678 | 47.0 | 78.0 | 150.0 | Eysturoy | Southern Eysturoy |
| Tvøroyri | 1.819 | 42.0 | 43.0 | 60.0 | Suðuroy | Suðuroy |
| Fuglafjørður | 1.584 | 70.0 | 23.0 | 32.0 | Eysturoy | Northern Eysturoy |
| Sunda Kommuna | 1.564 | 10.0 | 158.0 | 152.0 | Eysturoy | Northern Eysturoy |
| Vágur | 1.402 | 67.0 | 21.0 | 61.0 | Suðuroy | Suðuroy |
| Nes | 1.238 | 88.0 | 14.0 | 40.0 | Eysturoy | Southern Eysturoy |
| Vestmanna | 1.234 | 24.0 | 52.0 | 56.0 | Streymoy | Streymoy |
| Miðvágur | 1.1 | 24.0 | 47.0 | 48.0 | Vágar | Vágar |
| Sørvágur | 1.071 | 13.0 | 84.0 | 124.0 | Vágar | Vágar |
| Gøtu Kommuna | 1.066 | 35.0 | 31.0 | 69.0 | Eysturoy | Southern Eysturoy |
| Sjóvar Kommuna | 1.027 | 31.0 | 33.0 | 70.0 | Eysturoy | Southern Eysturoy |
| Leirvík | 873.0 | 79.0 | 11.0 | 33.0 | Eysturoy | Southern Eysturoy |
| Sandavágur | 797.0 | 13.0 | 61.0 | 48.0 | Vágar | Vágar |
| Hvalba | 765.0 | 19.0 | 40.0 | 99.0 | Suðuroy | Suðuroy |
| Eiði | 705.0 | 19.0 | 37.0 | 49.0 | Eysturoy | Northern Eysturoy |
| Kvívík | 615.0 | 13.0 | 49.0 | 75.0 | Streymoy | Streymoy |
| Sandur | 586.0 | 12.0 | 48.0 | 97.0 | Sandoy | Sandoy |
| Skopun | 507.0 | 56.0 | 9.0 | 0.0 | Sandoy | Sandoy |
| Hvannasund | 441.0 | 13.0 | 33.0 | 38.0 | Viðoy and Borðoy | Klaksvík |
| Sumba | 383.0 | 15.0 | 25.0 | 64.0 | Suðuroy | Suðuroy |
| Viðareiði | 339.0 | 11.0 | 30.0 | 48.0 | Viðoy | Norðoyggjar |
| Porkeri | 333.0 | 24.0 | 14.0 | 37.0 | Suðuroy | Suðuroy |
| Skálavík | 183.0 | 6.0 | 29.0 | 24.0 | Sandoy | Sandoy |
| Kunoy | 157.0 | 4.0 | 35.0 | 65.0 | Kunoy | Norðoyggjar |
| Húsavík | 131.0 | 5.0 | 26.0 | 66.0 | Sandoy | Sandoy |
| Hov | 125.0 | 12.0 | 10.0 | 24.0 | Suðuroy | Suðuroy |
| Fámjin | 113.0 | 9.0 | 13.0 | 24.0 | Suðuroy | Suðuroy |
| Funningur | 75.0 | 4.0 | 18.0 | 15.0 | Eysturoy | Northern Eysturoy |
| Húsar | 61.0 | 4.0 | 16.0 | 41.0 | Kalsoy | Norðoyggjar |
| Skúvoy | 57.0 | 4.0 | 13.0 | 73.0 | Skúvoy | Sandoy |
| Svínoy | 52.0 | 2.0 | 27.0 | 23.0 | Svínoy | Norðoyggjar |
| Fugloy | 44.0 | 4.0 | 11.0 | 14.0 | Fugloy | Norðoyggjar |
Question:
What is the sum of Markatal, when Inhabitants Per Km² is less than 13, and when Area (in Km²) is 27?
Answer:
23.0