Uncle Li brought 900 yuan to buy fertilizer. He bought 16 bags of fertilizer and left 260 yuan. How much is each bag of fertilizer?
李叔叔带900元买化肥，买了16袋化肥，还剩260元，每袋化肥多少元？
<gadget id="calculator">900 - 260</gadget>
<output>640</output>

<gadget id="calculator">640 / 16</gadget>
<output>40</output>

<result>40</result>