fill (someone's) coffers

Translations
наполнить (чьи-то) сундуки
The new business venture helped fill the company's coffers.
Новый бизнес-проект помог наполнить сундуки компании.
Definitions
To provide someone, an organization, or a government with more money, typically by increasing their funds, resources, or wealth.
Words
coffer

noun
сундук
fill

verb
заполнять