How to pronounce 四成 in Cantonese (7 out of 9):

都係貴咗四成
It cost 40 percent.

Cantonese Sentence Breakdown

dou1
all
both
entirely
(used for emphasis) even
already
(not) at all
metropolis
capital
big city
the whole
elegant
refined
without exception
also
too
still
used in a sentence to add an inference or interrogative tone
hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
gwai3
expensive
noble
your (name), used in a polite expression
precious
costly
valuable
a surname
to esteem highly
to value
to treasure
to honour or love
honorable
honorific
part of a place name
elegant
high class
zo2
Cantonese particle equivalent to 了le [了] or 过guò [过], a particle used to indicate perfective aspect for continuous state
completed actions
past events
change of situation
四成 sei3 sing4
forty percent