A conference center has six rooms. Each room can hold up to 80 people. Today, the conference center is only 2/3 full. How many people are in the conference center?
The conference center can hold up to 80 x 6 = 
<gadget id="calculator">80*6</gadget>
<output>480</output>
480 people.
Today, there are 480 x 2/3 = 
<gadget id="calculator">480*2/3</gadget>
<output>320</output>
320 people in the conference center.

<result>320</result>