A publisher published 56548 books in the year 1981, 42168 books in 1982, 25585 books in 1983 and 76097 books in 1984. How many books were published in total over these four years?

In a hotel, there are 184 rooms. If the rent for one night of each room is € 4696, what would be the daily income of the hotel from the room rent if all the rooms are occupied?

Katharina withdraws €5961 from bank. She asks the cashier to give the money using €10 bills. How many €10 bills will cashier give her and how much money will cashier give in other bills.

In an orchard, 199.5 kg of guavas are picked by the evening. Over the next hour, 4 workers add 1 kg 400 g of guavas each, and 4 workers remove 11.2 kg of bad fruits each. What is the total weight of guavas remaining?

Felix roughly estimates product 53 × 97 as follows, - He rounded off each number to the nearest ten. - Then he multiplied the numbers. What is his estimate?