2. A car factory planned to produce 15000 cars in the first quarter of this year, but the actual production quantity was more than planned 1 car. So, how many cars did the car factory actually produce in the first quarter of this year?
3. Xiaoming/kloc read 5/8 of a book in 0/0 day, and Xiaojie read 3/5 of the same book in 6 days. How many times do Xiaoming and Xiaojie read this book every day on average?
4. The sales of a shopping mall in the first quarter was110.5 million yuan, accounting for 5/26 of the planned sales of the whole year. 5/26 of the annual planned sales volume was completed in the second quarter. How many ten thousand yuan was completed in the second quarter (accurate to ten thousand yuan)? How many million yuan do you need to complete in the third and fourth quarters to complete the annual plan?
On Sunday, Xiaoming went to Xinhua Bookstore to buy books. He brought 60 yuan's money. First, I bought a popular science book, which cost him exactly 1, and then I bought a novel with the remaining 2/5. So, how much money does he have left at this time?
6. The total length of the Yellow River from its source to its mouth is about 5,500 kilometers.
(1) It is known that the total length of the Yangtze River is about 6,300 kilometers, so what is the total length of the Yellow River?
(2) It is known that the total length of the Huaihe River is 22/63 of that of the Yellow River, so how many kilometers is the total length of the Pearl River?