'How long of a ...'
114742
"How big of a problem" vs. "how big a problem"
132970
"within 1 to 2 weeks" vs "in 1 or 2 weeks"
54495
What is actually the characteristic length in fluid dynamics description?
150858
One and a half minute/minutes
24755
When is the next day?
67249
Can you determine a formula for this problem?
132555
"I've been doing this (for) a week" -- When do you leave out the 'for' when talking about duration, and when do you not?
64887
How long do seasons last?
107166
Time limit on accepting an answer
16321
"An hour" or "a hour"
134053
When is a function too long?
122833
In regard to short
12116
Two Answers, One Question
75595
How long is a unit of distance?
51030
How to get the duration of a video in Python?
126657
How to describe duration of, and duration since, a finished past event?
140047
Average length of the longest segment