Represent 56 divided by 8=7 using subtraction

Me answer number 3plz explain how you do it

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

Can you me find the missing length. i attached an image.