$begingroup$ The fractions in this article come from the multiclassing principles: when determining what amount of “multiclassed spellcaster” you might be, so as to figure out your spell slots, you have to increase your comprehensive stage in a few classes (like wizard), half your level in other courses (like paladin), https://dnd-most-used-spells30628.bloguetechno.com/detailed-notes-on-dnd-most-used-spells-52789284