Loan: URL013572
Initial Balance: 6,397,076.00
Monthly Payment: 177,697.00
Calculated Installments Paid: 5
Updated installments_paid to: 5

=== Formula for Import Process ===
When importing from ESS Excel:
1. Read initial_balance from Excel
2. Read ded_balance_amount from Excel
3. Read amount (monthly payment) from Excel
4. Calculate: installments_paid = (initial_balance - ded_balance_amount) / monthly_payment
5. Store this value in the installments_paid field