Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_84 (top_speed__km_h_ INTEGER, model VARCHAR)
### Question:
What is the top speed of the model 1.8 20v t?
### Answer:
SELECT SUM(top_speed__km_h_) FROM table_name_84 WHERE model = "1.8 20v t"