Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1637981_7 (detroit__dtw_ VARCHAR, grand_rapids__grr_ VARCHAR)

### Question ###
When Grand Rapids's fare was $377.29, what is the fare to Detroit?

### Accurate SQL ###

SELECT detroit__dtw_ FROM table_1637981_7 WHERE grand_rapids__grr_ = "$377.29"