Task
📝 **Task:** Currency converter.
Write a simple program that converts USD to UAH.
📋 **Steps:**
1. Variables `usd` (100) and `rate` (41.5) are already defined — don't change them
2. Compute UAH: `usd * rate`
3. Store in a variable `uah`
4. Print `uah`
💡 **Similar example (EUR to GBP):**
```python
eur = 50
gbp_rate = 0.85
gbp = eur * gbp_rate
print(gbp)
# Prints: 42.5
```
⚠️ **Expected output:** `4150.0` (with the dot and zero — float multiplication returns a float).