<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>What is the lowest number of Laps that have a Time of +24.440, and a Grid higher than 18?

SQL Table Create Statement:
CREATE TABLE table_name_39 (laps INTEGER, time VARCHAR, grid VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT MIN(laps) FROM table_name_39 WHERE time = "+24.440" AND grid > 18</codeend><|end|>