Counting all the storefronts on a section of Doi Can Street in Hanoi.
This section comprises the east-most 165 meters (540 feet) of the highlighted shopping street below:

With no ability in Vietnamese, I have attempted to transcribe the names of the shoppes.  My transcription here is unreliable, but we can be confidant in the number of storefronts facing the street.

North side of street, starting from the west-end of the selected section:
View N01 (north side of this Photo Sphere):

1.  Mai
2.  Jeans Style
3.  Dung Binh

View N02 (north side of this Photo Sphere):

4.  Giay
5.  Shop NAM / X&M

View N03 (north side of this Photo Sphere):

6.  [name unreadable]
7.  Dai Ly Hai Loc
8.  asos

View N04 (north side of this Photo Sphere):

Bus stop with newspapers.

View N05 (north side of this Photo Sphere):

9. KTOM
10.  Cat Toc Nam
11.  47B Cap Toc…

View N06 (north side of this Photo Sphere):

12.  Quang Cao My Thuat
13.  [name unclear, maybe Osram]

View N07 (north side of this Photo Sphere):

14.  [name unclear]
15.  Shop Ruby
16.  [name unclear]

View N08 (north side of this Photo Sphere):

17.  Hai Minh
18.  Cua Hang Sat
19.  Tiamo

View N09 (north side of this Photo Sphere):

20.  Thai Lan
21.  Zo Zo Boutique

View N10 (north side of this Photo Sphere):

22.  Det Kim – May 10- 10
23.  Xe O To Du Lich  (car rental?)
24.  Tigone

View N11 (north side of this Photo Sphere):

25.  Viet Khanh
26.  [name unclear]
27.  Secret / Sweeten Your Life

View N12 (north side of this Photo Sphere):

28.  Hang Thung
29.  1022 Chuot’s store
30.  [letters unclear…] Kids
31.  Shop Kieu Van

View N13 (north side of this Photo Sphere):

32.  Thien Hop
33.  SONKIM mode

View N14 (north side of this Photo Sphere):

34.  Made in Vietnam – Cambodia
35.  [AchLee?] House
36.  Bac / Bangkok Silver

View N15 (north side of this Photo Sphere):

37.  Hang Thung Cao Cap
38.  Lyly’s Boutique
39.  Che Thai Nguyen

View N16 (north side of this Photo Sphere):

40.  [no name visible, but appears to be a storefront]
41.  Shop Bao Minh

Looking east from near the east end:

South side of street, starting from the east-end of the selected section:
S16:

42.  [name unreadable]
43.  [Hong?]
44.  The Gioi Dia Nh… / CD – VCD / DVD – D9 – HD

S15:

45.  Hanosimex
46.  Vang Nuy Thann
47.  Nha Thuoc Long
48.  V.S / Hair Salon

S14:

49.  Doo Doo
50.  Hoang Thu
51.  Hanh Nguyen
52.  Triumph

S13:

53.  Phuc Hiep
54.  Phong Tran…
55.  Nha Thuoc Tu Nhan
56.  [name unreadable]

S12:

57.  Mobifone
58.  PNJ Silver
59.  Kim Dung

S11.

60.  dodo / leather goods
61.  Lien Tran
63.  Dich Vu Can Do
64.  Made in Vietnam

S10:


S09:

S08:

S07:

S06:

77.  Boi Boi

Looking west from the west end:

There are more storefronts on the north side than the south side (41 vs 36) primarily because a section of the south side is under construction (between S09 and S08).

With a total of ~ 77 storefronts on this ~165 meter section, Doi Can Street has a linear storefront density of ~467 / km (~750 / mile).