James streams on twitch.  He had 150 subscribers and then someone gifted 50 subscribers.  If he gets $9 a month per subscriber how much money does he make a month?
He now has 150+50=
<gadget id="calculator">150+50</gadget>
<output>200</output>
200 subscribers.
So he makes 200*9=$
<gadget id="calculator">200*9</gadget>
<output>1_800</output>
1800 a month.

<result>1_800</result>