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

### Instruction:
What is the smallest total produced with a model of M-420?

### Inputs:
table_name: table, columns: ['Model', 'Build date', 'Total produced', 'Wheel arrangement', 'Prime mover', 'Power output']

### Response:
SELECT MIN Total produced FROM table WHERE Model = m-420