A cylinder and a cone have the same base and height. It is known that the sum of their volumes is 6.4 cubic decimeters. What is the volume of the cylinder in cubic decimeters?
一个圆柱和一个圆锥等底等高，已知它们的体积之和是6.4立方分米，其中圆柱的体积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">6.4 / (4/3)</gadget>
<output>4.8</output>

<result>4.8</result>