As Easy As Pie

1. “as easy as pie” means “very easy” (same as “a piece of cake”)

Example: “It’s as easy as pie for him!” / “It’s a piece of cake for him!”

“彼にはこんなのたやすいことだからね”

Another Example: “This homework is easy as pie!” / “This homework is a piece of cake!” (meaning: this homework is extremely easy)