John takes 3 days off of streaming per week.  On the days he does stream, he streams for 4 hours at a time and makes $10 an hour.  How much does he make a week?
He streams for 7-3=
<gadget id="calculator">7-3</gadget>
<output>4</output>
4 days a week.
So he streams 4*4=
<gadget id="calculator">4*4</gadget>
<output>16</output>
16 hours a week.
That means he makes 16*10=$
<gadget id="calculator">16*10</gadget>
<output>160</output>
160 a week.

<result>160</result>