The word(s) "understand" appears 98 time(s) in 98 verse(s) in Quran in Mohsin Khan translation.

(51) And We have put coverings over their hearts lest they should understand it (the Qur'an), and in their ears deafness. And when you make mention of your Lord Alone [La ilaha illallah (none has the right to be worshipped but Allah) Islamic Monotheism (توحيد الله)] in the Qur'an, they turn on their backs, fleeing in extreme dislike.

(52) And recite what has been revealed to you (O Muhammad صلى الله عليه وسلم) of the Book (the Qur'an) of your Lord (i.e. recite it, understand and follow its teachings and act on its orders and preach it to men). None can change His Words, and none will you find as a refuge other than Him.

(53) And who does more wrong than he who is reminded of the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of his Lord, but turns away from them, forgetting what (deeds) his hands have sent forth. Truly, We have set veils over their hearts lest they should understand this (the Qur'an), and in their ears, deafness. And if you (O Muhammad صلى الله عليه وسلم) call them to guidance, even then they will never be guided.

(54) "That they understand my speech.

(55) Eat and pasture your cattle (therein); verily, in this are Ayat (proofs and signs) for men of understanding.

(56) Is it not a guidance for them (to know) how many generations We have destroyed before them, in whose dwellings they walk? Verily, in this are signs indeed for men of understanding.

(57) Indeed, We have sent down for you (O mankind) a Book (the Qur'an) in which there is Dhikrukum,(your Reminder or an honour for you i.e. honour for the one who follows the teaching of the Qur'an and acts on its teachings). Will you not then understand?

(58) And We made Sulaiman (Solomon) to understand (the case); and to each of them We gave Hukm (right judgement of the affairs and Prophethood) and knowledge. And We subjected the mountains and the birds to glorify Our Praises along with Dawud (David). And it was We Who were the doer (of all these things).

(59) Have they not travelled through the land, and have they hearts wherewith to understand and ears wherewith to hear? Verily, it is not the eyes that grow blind, but it is the hearts which are in the breasts that grow blind.

(60) Verily, in this [what We did as regards drowning of the people of Nuh (Noah)], there are indeed Ayat (proofs, evidence, lessons, signs, etc. for men to understand), for sure We are ever putting (men) to the test.