I have heard the following sentence in the TV series Narcos:Mexico:
Lo que pasa es que ahorita la deuda, bajita la mano, ya va por los 200 millones de dólares.
Context: Félix, leader of the Guadalajara cartel (México) and Pacho Herrera, one of the leaders of the Cali cartel (Colombia) are discussing about the money that the Cali cartel currently owes to the Guadalajara cartel. Pacho says that he and his associates always pays their debts and then Félix says the above sentence.
What does "bajita la mano" mean in this context?