[Question]Mr. Wong harvested 560 mangoes from the tree outside his house. He sold half of it at the market and distributed the rest evenly among 8 of his neighbors. How many mangoes does each neighbor receive?
[Answer]Mr. Wong had 560 / 2 = 280 mangoes left. Each of his neighbors received 280 / 8 = 35 mangoes. The answer is 35.

[Question]Phil likes to collect baseball cards. He buys a pack of twenty each week for a year, but then loses half of them one day in a fire. How many baseball cards does Phil have left?
[Answer]Since there are 20 cards in a pack and 52 weeks in a year, Phil starts by collecting 20 * 52 = 1040 baseball cards. He then loses half of them for 1040 / 2 = 520 cards remaining. The answer is 520.

[Question]John puts $25 in his piggy bank every month for 2 years to save up for a vacation. He had to spend $400 from his piggy bank savings last week to repair his car. How many dollars are left in his piggy bank?
[Answer]He saved money for 2 years, which is equal to 12 x 2 = 24 months. The amount of money he saved is $25 * 24 = $600. But he spent some money so there is $600 - $400 = 200 left. The answer is 200.

[Question]A special balloon increases by two-fifths of its previous volume every hour when placed under water. If its original volume is 500cm, what will its volume be after 2 hours underwater?
[Answer]
In the first hour, the balloon will increase in volume by two - fifths of 500cm which is (2 / 5) * 500cm = 200cm. After the first hour, it will have a volume of (500 + 200)cm = 700cm. In the second hour, it will increase in volume by two - fifths of 700cm which is (2 / 5) * 700cm = 280cm. After the second hour, it's volume will be (700 + 280)cm = 980cm. The answer is 980.