instruction: From the passage provided, extract the total amount of milk produced by Brazil in 2018
context: Brazil is the world's largest exporter of chicken meat: 3.77 million tonnes in 2019. The country is the holder of the second largest herd of cattle in the world, 22.2% of the world herd. The country was the second largest producer of beef in 2019, responsible for 15.4% of global production. It was also the 3rd largest world producer of milk in 2018. This year, the country produced 35.1 billion liters. In 2019, Brazil was the 4th largest pork producer in the world, with almost 4 million tonnes.
response: Brazil produced 35.1 billion litres of milk in 2018