Mom went to the supermarket to buy four bags of milk powder, paid the salesperson 100 yuan, and the salesperson got back 4 yuan. What is the average price of each bag of milk powder?
妈妈去超市买了四袋奶粉，付给营业员100元，营业员找回了4元，平均每袋奶粉售价多少元．
<gadget id="calculator">100 - 4</gadget>
<output>96</output>

<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<result>24</result>