Consider a process consisting of three resources. Assume there exists unlimited demand for the product.

Resource $1$ has a processing time of $9$ minutes per unit.

Resource $2$ has a processing time of $7$ minutes per unit.

Resource $3$ has a processing time of $6$ minutes per unit.

An illustration consisting of three resources and processes.

The three resources are staffed by different workers individually. The flow diagram is shown above.

What is the capacity of resource $2?$

Note: Round your answer to $3$ decimal places.