The farmer’s uncle packed apples into boxes for sale. Uncle Wang bought 15 boxes of apples for 1,200 yuan. Each box of apples weighed 20 catties.
农民伯伯将苹果装箱出售，王叔叔花了1200元钱买了15箱苹果，每箱苹果有20斤，平均每斤苹果多少元钱？
<gadget id="calculator">20 * 15</gadget>
<output>300</output>

<gadget id="calculator">1_200 / 300</gadget>
<output>4</output>

<result>4</result>