Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the IATA code of the airport that has a Total Cargo of 1,838,894 Metric Tonnes?

### Inputs:
table_name: table, columns: ['Rank', 'Airport', 'Location', 'Code (IATA)', 'Total Cargo (Metric Tonnes)', '2003 Rank', '% Change']

### Response:
SELECT Code (IATA) FROM table WHERE Total Cargo (Metric Tonnes) = 1,838,894