Uncle Zhang in the forest farm buys a certain plant seed. If he buys 2 kilograms, he will be left with 98.8 yuan. If he buys 5 kilograms, he will be left with 22 yuan. How much is the seed of this plant per kilogram?
林场的张叔叔购买某植物种子，如果买2千克，剩下98.8元，如果买5千克，剩下22元，这种植物种子每千克多少元？
<gadget id="calculator">98.8 - 22</gadget>
<output>76.8</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">76.8 / 3</gadget>
<output>25.6</output>

<result>25.6</result>