A publisher published 937550 books in the year 1982, 527581 books in 1983, 134437 books in 1984 and 787778 books in 1985. How many books were published in total?

In the Christmas fair, 14070 visitors came on Monday, 38894 visitors came on Tuesday, 58549 visitors came on Wednesday, and 62342 visitors came on Thursday. In total, how many visitors visited the Christmas fair?

Ron earns ₫15 per hour by working in coffee shop. Last week he worked for 19 hours, and spent ₫38 of the money he earned. Which of following expression shows the money left with him?

The following shape has been formed by joining 6 similar rectangles, each having a length of 11 cm and breadth of 2 cm. Find the perimeter of the given figure.