How to convert from radians to degrees and vice vers?

Hi !
For example,if you have 3π/4 that means you have 3*180°/4=135 degrees

Because: π=180° so you just have to replace π to 180°

Vice vers:you just have to replace 180° to π
For example:What it means 225°?
225°=270°-45°
       =3*180°/2  - 180°/4
       =3π/2- π/4
       =(6π-π)/4
       =5π/4

X=14 hope it !