Uncle Li went to the furniture store to buy chairs. Each chair was 65 yuan. He paid 300 yuan and got back 40 yuan. How many chairs did Uncle Li buy back?
李叔叔到家具城买椅子，每把椅子65元，他付了300元，找回40元，李叔叔买回几把椅子？
<gadget id="calculator">300 - 40</gadget>
<output>260</output>

<gadget id="calculator">260 / 65</gadget>
<output>4</output>

<result>4</result>