Here is a long-division calculation of 917÷7917 ÷ 7. There is a 7 under the 9 of 917. What does this 7 represent? What does the subtraction of 7 from 9 mean? Why is a 1 written next to the 2 from 9-79−79 − 7?

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?