Uncle Liu brought 800 yuan to buy fertilizer, bought 15 bags of fertilizer, and left 50 yuan. How much is the price of each bag of fertilizer?
刘叔叔带800元买化肥，买了15袋化肥，剩50元．每袋化肥的价钱是多少元？
<gadget id="calculator">800 - 50</gadget>
<output>750</output>

<gadget id="calculator">750 / 15</gadget>
<output>50</output>

<result>50</result>