28 teachers and students went to the park to row boats, and they happened to be full of 5 large and small boats. There are 6 people in each big boat and 4 people in each small boat. How many boats are rented in total?
28名师生去公园划船，恰好坐满了大、小船共5只．大船每只坐6人，小船每只坐4人，一共租了多少只小船．
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">28 - 20</gadget>
<output>8</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<result>1</result>