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? Let's answer step by step:
The number of words that Carl can type per hour is 50 * 60 = 3000 words. The number of words that Carl can type in 4 hours is 3000 * 4 = 12000 words. The number of words that Carl can type in 7 days is 12000 * 7 = 84000 words. The answer: 84000.