We have a question: Frank has an apple tree in his backyard. 5 apples are hanging on the tree and 8 have fallen to the ground. If Frank's dog eats 3 of the apples off of the ground, how many apples are left?
And an answer: 10
So how you got the answer?
Frank originally had 5 + 8 = 13 apples. After his dog eats 3, there are 13 - 3 = 10 apples.

We have a question: A shop sells laptops at $600 each and a smartphone at $400. Celine buys two laptops and four smartphones for her children. How much change does she get back if she has $3000?
And an answer: 200
So how you got the answer?
The cost of the two laptops is 2 x $600 = $1200. The cost of the four smartphones is 4 x $400 = $1600. Thus, the total cost of all the items is $1200 + $1600 = $2800. Therefore, Celine gets a change of $3000 - $2800 = $200.

We have a question: Bobby needs to buy a new pair of fancy shoes. He decides to go to a cobbler and get them handmade. The cobbler charges $250 to make the mold. He then charges $75 an hour for 8 hours to make the shoes. The cobbler agrees to only charge 80% of the cost for work to make the shoes, since it is his first pair of shoes. How much did Bobby pay?
And an answer: 730
So how you got the answer?
The cost of labor is 75 * 8 = $600. So Bobby pays 600 * .8 = $480. So that means Bobby pays 480 + 250 = $730.