It is known that there are currently a total of 6,000 access requests distributed to the customer's 10 ECSs through the elastic load balancing ELB, and each ECS handles 600 requests. When the…

It is known that there are currently a total of 6,000 access requests distributed to the customer's 10 ECSs through the elastic load balancing ELB, and each ECS handles 600 requests. When the customer increases the number of ECSs in the backend server group to 20 through the elastic scaling AS service and the number of access requests is still 6,000, each ECS needs to process ( ) requests. (Please fill in the Arabic numerals in the blanks)