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:
| Match No. | Home Team | Score | Away Team | Attendance |
| --- | --- | --- | --- | --- |
| 21 | Nippon Steel Oita F.C. | 3-1 | Matsumoto Yamaga F.C. | 261 |
| 22 | Kochi University | 4-0 | S.C. Tottori | 138 |
| 23 | National Institute of Fitness and Sports in Kanoya | 0-3 | Biwako Seikei Sport College | 223 |
| 24 | Nirasaki Astros F.C. | 1-3 ( a.e.t. ) | Ritsumeikan University | 78 |
| 25 | Mitsubishi Motors Mizushima F.C. | 2-0 | F.C. Central Chugoku | 723 |
| 26 | Kansai University | 0-0 (a.e.t.) | F.C. Ryūkyū | 359 |
| Kansai University won 6-5 on penalties. | Kansai University won 6-5 on penalties. | Kansai University won 6-5 on penalties. | Kansai University won 6-5 on penalties. | Kansai University won 6-5 on penalties. |
| 27 | Kanagawa University | 0-1 | F.C. Gifu | 794 |
| 28 | Fukuoka University | 0-2 | Miyazaki Sangyo-keiei University | 303 |
| 29 | Aichi Gakuin University | 1-8 | Banditonce Kobe | 356 |
| 30 | Shobi University | 0-2 | Tochigi S.C. | 575 |
| 31 | Ryutsu Keizai University F.C. | 0-2 | Rosso Kumamoto | 348 |
| 32 | Shizuoka F.C. | 2-1 | Arte Takasaki | 251 |
| 33 | YKK AP F.C. | 1-0 (a.e.t.) | Hachinohe University | 1,125 |
| 34 | Hosei University | 2-0 | TDK S.C. | 449 |
Question:
How many people attended Match No. 31?
Answer:
348.0