'enter how many' is correct and usable in written English.
You can use it when you are asking someone to input a number into a program or form. For example: Please enter how many people will be attending the event in the textbox below.
The tool asks people to enter how many hours they want to volunteer each week and based on their earnings, the calculator estimates what a variety of charities would be able to accomplish if the person instead donated what they would make at work in the same time.
For parents using formula, you can simply enter how many ounces baby ate.
After entering your ZIP code, you're asked to enter how many miles per day you think you drive.
In any messaging thread, you'll be able to tap a "$" button, enter how many dollars you want to send, and instantly transfer that money to a friend.
You enter how many cans, bottles, newspapers, or office paper you've recycled and it tells you how much energy you saved and posts your achievement to all your friends via the Facebook News feed.
One thing that many new mothers discover, however, is that remembering to enter how many ounces they pumped is easier said than done when taking care of a newborn.
Under that line, enter the place where you are going to go on the field that says "Where do you want to go?" Enter the dates of your stay on the calendar next to the text field, and enter for how many guests would the place be on the drop-down list next to the calendar.
After the first time you learn to program the power level or enter in how many pounds of meat you're defrosting, you generally retain that knowledge for later use.
Tells about the many competitions Robin entered, how she loves to perform, and how she prepares for her concerts and her doctoral recitals.
To even enter the game, how many of the major poetry publishing houses would ever dare to publish a black/Asian poet's first book?
It's hard to imagine that Beijing doesn't remember that assistance when deciding which foreign films can enter China and how many new theaters IMAX can open.
