A piece of cake

Origin: It's a piece literally translates as' This is a cake', which really means' This is a cake'. Other sentences with similar meanings are: It's easy. /Very simple. The ancient queen has a famous saying: let them eat cakes. It is said that a courtier told the queen that the people had no bread to eat, and the queen told them to eat bread, not knowing the sufferings of the people, so this sentence was extended to indifference or a little knowledge. This is a cake, which literally means "that's a cake". Eating cake is easy, so this idiom is equivalent to saying' easy'. For example, that exam was a piece of cake for me.