I can’t calculate value after exchange Currency exchange Point 6

```
def exchangeable_value(budget, exchange_rate, spread, denomination):
"""
:param budget: float - the amount of your money you are planning to exchange.
:param exchange_rate: float - the unit value of the foreign currency.
:param spread: int - percentage that is taken as an exchange fee.
:param denomination: int - the value of a single bill.
:return: int - maximum value you can get.
"""
computed_spread = (exchange_rate / 100) * spread
computed_exchange_rate = computed_spread + exchange_rate
computed_budget = exchange_money(budget, computed_exchange_rate)
return computed_budget
```