Mom bought 6 kilograms of apples, handed them to the salesperson for 30 yuan, and got back 1.20 yuan. How much is each kilogram of apples?
妈妈买了6千克的苹果，交给售货员30元，找回1.20元，每千克苹果多少元？
<gadget id="calculator">30 - 1.2</gadget>
<output>28.8</output>

<gadget id="calculator">28.8 / 6</gadget>
<output>4.8</output>

<result>4.8</result>