How exactly does dealing in stock make me money?
If you buy a stock and it goes up, you can sell it and make money. But if you buy a stock and it goes down, you can lose money.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How exactly does dealing in stock make me money?

### Response:
If you buy a stock and it goes up, you can sell it and make money. But if you buy a stock and it goes down, you can lose money.