White blending paint is 7.2 yuan per kilogram, blue is 7.8 yuan per kilogram, and yellow is 7.5 yuan per kilogram. Now to configure light green paint, you need 5 kg of white, 1.2 kg of yellow, and 0.8 kg of blue. How much is it per kilogram after adjustment.
白色调和漆每千克7.2元，蓝色每千克7.8元，黄色每千克7.5元．现要配置淡绿色的漆，需要白色的5千克，黄色的1.2千克，蓝色的0.8千克．调好之后每千克多少元钱．
<gadget id="calculator">7.2 * 5</gadget>
<output>36</output>

<gadget id="calculator">7.8 * 0.8</gadget>
<output>6.24</output>

<gadget id="calculator">7.5 * 1.2</gadget>
<output>9</output>

<gadget id="calculator">36 + 6.24 + 9</gadget>
<output>51.24</output>

<gadget id="calculator">5 + 1.2 + 0.8</gadget>
<output>7</output>

<gadget id="calculator">51.24 / 7</gadget>
<output>7.32</output>

<result>7.32</result>