If you have 23,230 dollars how many more do you need to get to 85,325

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Someone me i need with this stuff

Interpret the following expression (5y^2-7)^3/(2y)^2