myth - i - cal
There are many reasons to learn how to divide mythical into syllables. Separating a word like mythical into syllables is mainly to make it easier to read and pronounce. The syllable is the smallest sound unit in a word, and the separation of the mythical into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate mythical into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce mythical more accurately. Furthermore, separating mythical into syllables can also be useful in teaching grammar and spelling, as it allows students to more easily understand and apply the rules of accentuation and syllable division.
In the case of the word mythical, we find that when separating into syllables the resulting number of syllables is 3. With this in mind, it's much easier to learn how to pronounce mythical, as we can focus on perfecting the syllabic pronunciation before trying to pronounce mythical in full or within a sentence. Likewise, this breakdown of mythical into syllables makes it easier for us to remember how to write it.