Uncle Liu wanted to buy 16 bags of chemical fertilizers. He prepared 600 yuan, but the result was 40 yuan short. How much is each bag of fertilizer?
刘叔叔想买16袋化肥，他准备了600元钱，结果还差40元．每袋化肥多少元钱？
<gadget id="calculator">600 + 40</gadget>
<output>640</output>

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

<result>40</result>