가 많이

a lot

→ 가
phrase Uncommon #5,425
a lot 가 is a subject particle attached to the preceding noun, while 많이 means “a lot” or “much.” This is not a fixed expression; it is a common pattern meaning that something happens or is true to a great extent.
KO: 오늘은 비가 많이 와요.
EN: It rains a lot today.

가지가 많이 자랐어요.

The branches have grown a lot.