Consider the following tables of a bank.
| Loan number | Branch name | Amount |
|---|
| L11 | Banjara Hills | 90000 |
| L14 | Kondapur | 50000 |
| L15 | SR Nagar | 40000 |
| L22 | SR Nagar | 25000 |
| L23 | Balanagar | 80000 |
| L25 | Kondapur | 70000 |
| L19 | SR Nagar | 65000 |
| Customer name | Loan number |
|---|
| Anand | L11 |
| Karteek | L11 |
| Karteek | L14 |
| Ankita | L15 |
| Gopal | L19 |
| Karteek | L22 |
| Karteek | L23 |
| Sunil | L23 |
| Sunil | L25 |
Evaluate
\[
\pi_{\text{branch name},\,\text{customer name}}(\mathrm{Loan}\bowtie\mathrm{Borrower})
\div \pi_{\text{branch name}}(\mathrm{Loan}),
\]
where \(\bowtie\) denotes natural join. The number of returned tuples is ______ (answer in integer).