a piece of cake

US /ə piːs əv keɪk/
UK /ə piːs əv keɪk/
"a piece of cake" picture
1.

sangat mudah, gampang sekali

something that is very easy to do

:
The exam was a piece of cake; I finished it in half the time.
Ujian itu sangat mudah; saya menyelesaikannya dalam separuh waktu.
Learning to ride a bike was a piece of cake for him.
Belajar naik sepeda sangat mudah baginya.