Need someone smart to calculate Idaho child support

This is in Idaho 4 kids. Parent 1 has the kids most of the time, Parent 2 has the kids every other weekend and every Thursday (custody order in place).

Parent 1 makes $51,200 a year(has kids majority of the time) Parent 2 makes $17,900 a year

Who should pay child support to whom, and how much?

If parent 1 makes $80,000 a year And parent 2 makes $26,000 a year What would change

Tl;dr parent 1 has kids the majority of the time, but pays parent 2 child support, and i think someone messed up the calculations.