Please answer the following question by reasoning step-by-step.
James streams on twitch. He had 150 subscribers and then someone gifted 50 subscribers. If he gets $9 a month per subscriber how much money does he make a month?

1800
He now has 150 + 50 = 200 subscribers.

So he makes 200 * 9 = $1800 a month.

.

The answer is 1800