Question: Can you break down the solution for me for this math problem: While planning to finish reading a 140-page book in one week, Jessy initially decides to read 3 times daily, 6 pages each time, every day of the week. How many more pages should she read per day to actually achieve her goal?
Answer: 
To achieve her goal, she must read 140/7 = 20 pages per day
She planned to read 3 * 6 = 18 pages daily
She must read 20 - 18 = 2 more pages per day