The store can still make a profit of 20% by selling the goods at 10% off the listed price. If the purchase price of the item is 21 yuan, what is the price of each item?
商店把货物按标价的九折出售，仍可获利20%，若该物品的进价为21元，则每件的标价应为多少元？
<gadget id="calculator">21 + 4.2</gadget>
<output>25.2</output>

<gadget id="calculator">25.2 / 0.9</gadget>
<output>28</output>

<result>28</result>