The word(s) "how" appears 214 time(s) in 201 verse(s) in Quran in Muhammad Habib Shakir translation.

(81) And thus did We rouse them that they might question each other. A speaker among them said: how long have you tarried? They said: We have tarried for a day or a part of a day. (Others) said: Your Lord knows best how long you have tarried. Now send one of you with this silver (coin) of yours to the city, then let him see which of them has purest food, so let him bring you provision from it, and let him behave with gentleness, and by no means make your case known to any one:

(82) Say: Allah knows best how long they remained; to Him are (known) the unseen things of the heavens and the earth; how clear His sight and how clear His hearing! There is none to be a guardian for them besides Him, and He does not make any one His associate in His Judgment.

(83) And how can you have patience in that of which you have not got a comprehensive knowledge?

(84) But she pointed to him. They said: how should we speak to one who was a child in the cradle?

(85) how clearly shall they hear and how clearly shall they see on the day when they come to Us; but the unjust this day are in manifest error.

(86) And how many of the generations have We destroyed before them who were better in respect of goods and outward appearance!

(87) And how many a generation have We destroyed before them! Do you see any one of them or hear a sound of them?

(88) That We may show you of Our greater signs:

(89) And truly We showed him Our signs, all of them, but he rejected and refused.

(90) Does it not then direct them aright how many of the generations In whose dwelling-places they go about We destroyed before them? Most surely there are signs in this for those endowed with understanding.