入れると

if/when you put it in

→ 入れる
phrase Uncommon #18,967
if/when you put it in 入れる means “to put in,” and と marks a conditional or predictable result. Depending on context, 入れる can also mean “to include” or “to take into consideration.”
JA: 薬を水に入れると、すぐに溶けます。
EN: When you put the medicine in water, it dissolves immediately.

その花びん入れると花はもっときれいに見える

The flowers will look even more beautiful in that vase.

砂糖は入れると溶ける

Sugar dissolves when added to hot water.

少しずつ口に入れると飲み込むんだ

If you put it in its mouth little by little, it swallows it.

— तुम्बाड (2018)

グラスに熱湯入れると割れる恐れがあるので入れないでください

Please do not pour boiling water into the glass, as it may crack.

全ての入れると合計いくらになりますか

How much will the total be with all taxes included?

光をあまり入れると目に悪い

Letting in too much light is bad for your eyes.

砂糖は熱いコーヒーに入れると溶ける

Sugar dissolves when added to hot coffee.