「小數怕長計」

(pos:語句)
<explanation>
yue:就算係好細嘅數目，日積月累，都可以變到好大；通常攞嚟形容錢，尤其是係支出
eng:small numbers accumulate over time to make a great sum; usually used to describe money, especially expenditures; literally '(even for) small amounts, one fears long-term calculation'
<eg>
yue:呢部老爺車成日壞，小數怕長計，最好就買返部新車嘞。 (ni1 bou6 lou5 je4 ce1 seng4 jat6 waai6, siu2 sou3 paa3 coeng4 gai3, zeoi3 hou2 zau6 maai5 faan1 bou6 san1 ce1 laak3.)
eng:This old car breaks down all the time. The repair costs will mount up over the years, so you'd better buy a new one.