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:
| District | Area Size\n(km²) | Population | Density\nper km² |
| --- | --- | --- | --- |
| Yamato flat inland plain | 837.27 | 1,282 | 1,531 |
| (Share in %) | 22.7% | 89.7% |  |
| Yamato highland | 506.89 | 56 | 110 |
| (Share in %) | 13.7% | 3.9% |  |
| Gojō, Yoshino | 2,346.84 | 92 | 39 |
| (Share in %) | 63.6% | 6.4% |  |
| Total Prefecture | 3,691.09 | 1,430 | 387 |
| (Share in %) | 100.0% | 100.0% |  |
Question:
what is the combined area size of the yamato flat inland plain and the yamato highland?
Answer:
1344.16