This is a self-contained calculation task. No inputs directory exists, so I'll work purely from the figures in the PROMPT.md. Let me compute each BAS label.

Given:
- Total sales incl GST (G1) = $110,000
- Total purchases incl GST = $66,000
- Gross wages = $40,000
- PAYG withholding rate = 20%

Calculations:
- G1 = $110,000 (total sales, GST-inclusive)
- 1A = $110,000 / 11 = $10,000
- 1B = $66,000 / 11 = $6,000
- W2 = 20% × $40,000 = $8,000
- Net payable = (1A - 1B) + W2 = ($10,000 - $6,000) + $8,000 = $4,000 + $8,000 = $12,000

All figures are clean. My final message is the raw content of `response.md`.

# BAS Calculation - FY2025-26 Quarter

This is a benchmarking hypothetical, not tax advice. All sales and purchases are GST-taxable at the standard rate of 10%, so each GST-inclusive amount contains one eleventh (1/11) of GST.

## Inputs

- Total sales including GST: $110,000
- Total purchases including GST: $66,000
- Gross wages paid to employees: $40,000
- PAYG withholding rate: 20%
- No PAYG instalments, fuel tax credits, or other amounts this quarter.

## Results by BAS label

| Label | Description | Amount |
|-------|-------------|--------|
| **G1** | Total sales (GST-inclusive) | **$110,000** |
| **1A** | GST on sales (1/11 of GST-inclusive sales) | **$10,000** |
| **1B** | GST on purchases (1/11 of GST-inclusive purchases) | **$6,000** |
| **W2** | Amounts withheld from wages (rate x gross wages) | **$8,000** |
| **Net amount payable to the ATO** | (1A - 1B) + W2 | **$12,000** |

## Working

**G1 - Total sales (GST-inclusive)**
G1 is simply the total sales figure including GST.
G1 = $110,000

**1A - GST on sales**
One eleventh of the GST-inclusive sales.
1A = $110,000 / 11 = $10,000

**1B - GST on purchases**
One eleventh of the GST-inclusive purchases.
1B = $66,000 / 11 = $6,000

**W2 - Amounts withheld from wages (PAYG withholding)**
The withholding rate applied to gross wages.
W2 = 20% x $40,000 = 0.20 x $40,000 = $8,000

**Net amount payable to the ATO**
Net GST (1A - 1B) plus the PAYG withholding (W2).
Net = (1A - 1B) + W2
Net = ($10,000 - $6,000) + $8,000
Net = $4,000 + $8,000
Net = $12,000

## Summary

- G1 = $110,000
- 1A = $10,000
- 1B = $6,000
- W2 = $8,000
- Net amount payable to the ATO = $12,000

## Note on approach

The figures are GST-inclusive, so each contains 1/11 of GST (a 10% rate means GST is 1/11 of the tax-inclusive total, since 10/110 = 1/11). I divided the GST-inclusive sales and purchases by 11 to get 1A and 1B respectively, multiplied gross wages by the 20% withholding rate to get W2, then combined net GST (1A - 1B) with W2 to get the net amount payable. All inputs divide evenly, giving whole-dollar results with no rounding required.