There are 570 packs of milk in the supermarket, and the number of packs of milk is three times that of yogurt. How many packs of yogurt are there?
超市有牛奶570包，牛奶的包数是酸奶的3倍，酸奶有几包？
<gadget id="calculator">570 / 3</gadget>
<output>190</output>

<result>190</result>