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What is the difference between 明日何をしますか and 明日どうしますか？

I have come across the following question and answer:

> 明日どうしますか。
>
> 傘を箱の中に入れます。

So, I wonder if I can say 明日何をしますか instead.
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2018-11-14T02:44:56.403
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2018-12-08T16:10:36.360
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question
questions interrogatives
The difference between 明日何をしますか and 明日どうしますか
Given the context:

> _a man was borrowing an umbrella at a station, and was asking a station
> worker how and when he could return it._

どうしますか is absolutely better than 何をしますか, because in this situation, they
respectively mean:

> 明日何をしますか _What am I going to do tomorrow?_  
>  明日どうしますか _What am I going to do **with it** tomorrow?_

Incidentally, this is not the most natural phrase native speakers would utter
in this context, but presumably they want to reduce grammar repertoire for
beginner students. For example I would say:

> 明日どう（すれば／したら）いいですか _What should I do (with it) tomorrow?_

* * *

**PS**

In the bigger picture, it is but a tip of an iceberg, a total discrepancy in
work division of question words between Japanese and English. To put
abstractly, English selects question words grammatically (i.e. in relation to
the original sentence) while Japanese semantically. It is very much
complicated, but taking your example, both the speaker and the hearer are
supposed to recognize a common matter about a borrowed umbrella. Thus a next
whatever step you take is an _instrument_ to solve, or in any way to deal with
this final goal. This sort of action is always governed by どう in Japanese,
otherwise it will sound that you suddenly throw in a new, independent topic.
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2018-12-08T15:53:56.350
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2018-12-08T16:10:36.360
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answer