Dolar Hoje
In short
The exchange rate for the US Dollar against the Brazilian Real is currently trading at 5.42 BRL.
In plain words
This shows how much one US Dollar is worth in Brazilian money. If you want to buy dollars with Reais, this number tells you the price.
A simple example
If you have 100 Brazilian Reais, you can exchange them for approximately 18.45 US Dollars at this rate.
Why it matters
It affects the cost of imported goods and international travel. A higher rate makes travelling to the USA more expensive for Brazilians.
Easy to mix up
Do not confuse this with the value of the Real against the Euro or other currencies.