Learn Russian: После закупки мы проверим остатки. - After the purchase, we will check the remainders.

While покупка is an everyday purchase (like buying a shirt or groceries), закупка implies a larger scale or more systematic procurement. It is often used in business contexts for wholesale buying or purchasing supplies.

Why use the plural остатки here instead of the singular?

In business, accounting, or inventory contexts, остатки (literally "leftovers" or "remains") is the standard term for "stock balance" or "remaining inventory." It is almost always used in the plural when referring to commercial goods.

Why is закупки in the genitive case here?

The preposition после (after) always takes the genitive case. Since закупка is a feminine noun ending in -а, it changes to -и in the genitive singular, resulting in после закупки.

Why is проверим in the perfective aspect here?

The action of checking the inventory is viewed as a single, completed future event that will yield a specific result. The imperfective equivalent, будем проверять or проверять, would imply a regular habit or an ongoing, unfinished process of checking.