Gardıroplarınızı düzenlerken yorgan, battaniye ve nevresimleri saklama kutularına yerleştirerek yer kazanabilirsiniz.

It means “while organizing your wardrobes.”
Breakdown:
• gardırop = wardrobe
• -lar = plural (“wardrobes”)
• -ınız = 2nd-person plural/formal possessive (“your”)
• -ı = accusative case (marks “your wardrobes” as a definite direct object of düzenlemek)
• düzenle = “to organize” (düzen + -le verb-forming suffix)
• -r = aorist/present stem marker
• -ken = “when/while” participle suffix

In Turkish, direct objects that are definite or specific require the accusative case. Since gardıroplarınızı (“your wardrobes”) is clearly defined, it gets -ı. In the adverbial clause “düzenlerken,” you still mark the object of düzenlemek when it’s definite.

The suffix -ken turns a verb into an adverbial participle meaning “when/while.” So düzenlerken = “while (you) organize.”

• yorgan = quilt or duvet, typically thick and filled, used in very cold weather
• battaniye = blanket, generally thinner, used for extra warmth or as a lightweight cover

Nevresim refers to a bed-linen set, especially a duvet cover (and sometimes matching pillowcases). Pluralized, it means “bedsheets/duvet covers.”

In coordinated noun phrases in Turkish, you can attach number and case endings only to the final noun. Here, nevresimleri carries both plural (-ler) and accusative (-i), and they apply to the whole list: “quilts, blankets and duvet covers.”

• saklama = “storage” (verbal noun from saklamak, “to store”)
• kutu = “box”
• -lar = plural (“boxes”)
• -ına = dative case (“to/into”)
Together, saklama kutularına = “into storage boxes.”

yerleştirerek is the gerund form of yerleştirmek (“to place/arrange”) formed with -erek, meaning “by placing/arranging.” It links the action of placing items into boxes with the result of gaining space.

Breakdown:
• kazan = root “to gain”
• -abil = ability/modal suffix (“can”)
• -ir = present/aorist
• -siniz = 2nd-person plural/formal ending
So kazanabilirsiniz = “you can gain.”