Claude Opus 4.8 vs GPT-5.6 Luna for everyday maths

# Fuel Cost Calculation

## Step 1: Find gallons needed
$$260 \div 42 = 6.1905 \text{ gallons}$$

## Step 2: Convert gallons to litres
$$6.1905 \times 4.546 = 28.142 \text{ litres}$$

## Step 3: Calculate the cost
$$28.142 \times £1.46 = £41.088$$

## Step 4: Round to the nearest 10p
$$£41.088 \approx £41.10$$

## Answer
**The journey costs approximately £41.10 in fuel.**

1. **Gallons of petrol used:**

\[
260 \div 42 = 6.1905\text{ gallons}
\]

2. **Convert gallons to litres:**

\[
6.1905 \times 4.546 = 28.1419\text{ litres}
\]

3. **Calculate the fuel cost:**

\[
28.1419 \times £1.46 = £41.087
\]

4. **Round to the nearest 10p:**

\[
\boxed{£41.10}
\]

The journey costs **£41.10 in fuel**.