Carl types at a speed of 50 words per minute. If he types continuously for 4 hours per day, how many words can he type in 7 days?
The number of words that Carl can type per hour is 50 * 60 = 
<gadget id="calculator">50*60</gadget>
<output>3_000</output>
3000 words.
The number of words that Carl can type in 4 hours is 3000 * 4 = 
<gadget id="calculator">3000*4</gadget>
<output>12_000</output>
12000 words.
The number of words that Carl can type in 7 days is 12000 * 7 = 
<gadget id="calculator">12000*7</gadget>
<output>84_000</output>
84000 words.

<result>84_000</result>