John can play 200 beats per minute.  If he plays 2 hours a day for 3 days how many beats does he play?
He trains 2*60=
<gadget id="calculator">2*60</gadget>
<output>120</output>
120 minutes a day.
That means he played 200*120=
<gadget id="calculator">200*120</gadget>
<output>24_000</output>
24000 beats per day.
So he played 24000*3=
<gadget id="calculator">24000*3</gadget>
<output>72_000</output>
72000 beats.

<result>72_000</result>