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:
| Class | Type | Operator | No. Built | Year Built | Cars per Set | Unit nos. |
| --- | --- | --- | --- | --- | --- | --- |
| Class 375/3 | Express & Outer suburban | Southeastern | 10.0 | 2001–2002 | 3.0 | 375301-310 |
| Class 375/6 | Express & Outer suburban | Southeastern | 30.0 | 1999–2001 | 4.0 | 375601-630 |
| Class 375/7 | Express & Outer suburban | Southeastern | 15.0 | 2001–2002 | 4.0 | 375701-715 |
| Class 375/8 | Express & Outer suburban | Southeastern | 30.0 | 2004–2005 | 4.0 | 375801-830 |
| Class 375/9 | Express & Outer suburban | Southeastern | 27.0 | 2003–2004 | 4.0 | 375901-927 |
Question:
How many number Builts had unit numbers of 375301-310?
Answer:
10.0