This should be in math category
<span> one of the </span>waves<span> that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio </span>waves<span>, infrared, visible light, ultraviolet, X-rays, and gamma rays.</span>
You will have to divide it 540 divided by 4.5 is 120
Corpus Juris Civilis was a major reform of Byzantine law and became the ultimate model for inspiration for the legal system of almost every country in the European Nation