[Question]Monica was saving money for her future. Every week he put $15 into her moneybox. After the moneybox got full, which took 60 weeks, Monica took all the money out and took it to the bank, and she started saving money again. She repeated this whole process 5 times. How much money did Monica take to the bank in total?
[Answer]During 60 weeks, Monica collected 15 * 60 = $900. She repeated this process 5 times, which means in total she collected 5 * 900 = $4500. The answer is 4500.

[Question]Every year in January, Natalia, the librarian, tidies up the books. She has 145 novels, 271 comics, 419 documentaries, and 209 albums to store. She wants to put these in crates that can hold 9 items. How many crates will Natalia use?
[Answer]Let’s first calculate the total number of items: 145 + 271 + 419 + 209 = 1044 items. Now let’s put the items in the crates: 1044 / 9 = 116 crates. The answer is 116.

[Question]The school principal decided that she wanted every class to have an equal number of boys and girls in each first-grade classroom. There are 4 classrooms. There are 56 boys and 44 girls. How many total students are in each classroom?
[Answer]Each classroom will have 14 boys because 56 boys divided into 4 classrooms equals 14 boys per classroom. Each classroom will have 11 girls because 44 girls divided into 4 classrooms equals 11 girls per classroom. In total, each classroom will have 25 students because 14 boys plus 11 girls equals 25 total students. The answer is 25.

[Question]Isabella is twice as old as Antonio. In 18 months, she will be 10 years old. How many months old is Antonio?
[Answer]
First, we determine that Isabella will be 10 * 12 = 120 months old at age 10, to find a number to compare her age to Antonio's with. Then we subtract the 18 months from the total of 120 months to find 120 - 18 = 102 months, which is the age Isabella is currently. Since at 102 months old Isabella is twice as old as Antonio, we take 102 / 2 = 51 months as Antonio's age. The answer is 51.