事情做起来很简单用英语怎么表达？

It's a piece of cake.

There's nothing to it.

Anyone can do it.

I can do it in my sleep.

I can do this with my eyes closed.

It's easy as pie / easy as a,b,c

I can do it with my eyes shut.

I was born doing this.

It's a doddle (UK)

No problem is too big for me.

Easy peasy.

I can have this done before most can finish getting ready for work.

I eat “programming” for breakfast.

It's a walk in the park.

It's a breeze.

It's a cinch.

It's easy as 1 2 3

It's not rocket science.

This is easier than drinking water through a straw.

It's childsplay.

This work is like a drop in the bucket for me.

I can solve this without having to move.

I can do this standing still.

This work is as easy as catching leaves in a basket.

I can do this with one hand tied behind my back.

This is like playing paddy cake.

It's easy as the wind blows.

I can do this in the dark.

It's like shooting fish in a barrel.