Uncle Wang brought 870 yuan and bought 9 bags of chemical fertilizer, leaving 168 yuan. How much is each bag of chemical fertilizer?
王叔叔带了870元钱，买了9袋化肥，还剩168元，每袋化肥多少元？
<gadget id="calculator">870 - 168</gadget>
<output>702</output>

<gadget id="calculator">702 / 9</gadget>
<output>78</output>

<result>78</result>